How Does An Electric Motor Work Physics



in physics to understand, some high school physics should be more than enough. Most electric motors work by electromagnetism, but motors based on other electromechanical phenomena, such as electrostatic forces and the piezoelectric effect, exist. The electric motor is mainly classified into two types. the load angle) must be always greater than 0°in order to keep the motor in motion (negative angles reverse the rotation). Trolling Motor Overview. Electricity sources are connected to metal pieces called brushes that allow electricity to flow into an electromagnet that is connected to the axle. The brush design of the electric motor was discovered independently by several scientists and is used in many consumer appliances to this day! To unlock this lesson you must be a Study. They are the AC motor and the DC motor. The stator has several overlapping windings equipoised by an electric angle of 120 degrees. Both water and electricity enter your home from the utility service lines and exit after being distributed throughout the house. *FREE* shipping on qualifying offers. If you pass electricity to one end of the motor axle, it rotates at the other end, which provides the power to drive a machine. The electric motor. 00 minutes? 200 W 12. When the switch is closed, the current starts to flow and the coil becomes an electromagnet. It could be transmitted by a third rail, overhead lines or induction from lines buried in the roadway and the vehicle may not even have a battery. Electric cars get power form the rechargeable batteries installed inside the car. and do not touch each other. Take the opportunity to look at some examples of the way in which electric motors are used in everyday life. Thus, electrical power, like mechanical power, is the rate at which work is done. Electric Motors and How They Work Electricity Projects, electricity experiments models, expo ideas, exhibition topics for Kids and also for Middle school, Elementary School for class 5th Grade, 6th, 7th, 8th, 9th 10th, 11th, 12th Grade and High School, MSC and College Students. We had all studied quite a lot of physics before so it was pretty easy to come up with many formulas that have an effect in the physics of an electric motor. How do they produce this immediate torque and why can't good old internal. Electric cars use induction motors. Fun Facts about Electromagnetism and Electric Motors Some electric generators can be driven by human power such as a hand crank or a bicycle to generate electricity. You have 30 seconds to make an electric motor running in excess of ten thousand RPM. An AC controller changes. Ultimately, motors are the interface between the electrical and mechanical systems of a facility. Motors which are used in simple circuits help in giving a better understanding of electricity, motion and technology to the students. Electric motors A coil of wire carrying a current in a magnetic field experiences a force that tends to make it rotate. Find out how to make a simple electric motor. Take the opportunity to look at some examples of the way in which electric motors are used in everyday life. How much work is required to lift a 50 kg object straight up 10. a synchronous motor must be synchronous with the speed of the AC generator, how does the happen the arature must rotate at the same speed or number of rpm as the frequency of the current (60 cycles AC)being suppplied by the generator or some fixed multiple of that speed (1/30 sec; 1/20sec; 1/15 sec). The electric motor drives the pulley which pulls up or down the car(now we will see changes in the design as it was just rough idea). Only a small fraction is wasted as it heats up the surroundings. Such sliding contacts are known as commutators. Around the armature is the stator, which holds insulated coils of wire, usually copper. First electric generator In short, in the presence of an electromagnetic field a current can move a wire and a wire movement can generate a current. Learn about and revise electromagnetism, the motor effect and its applications in motors with GCSE Bitesize Physics. The AC motor's stator has coils which are supplied with the AC current and produces a rotating magnetic field. Electric cars use an on-board battery to store electrical energy, which is recharged by connecting it to an electricity supply (usually the 'mains'). The traditional meter usually has a metal disc that rotates as power is consumed. Get an answer for 'Explain how an electric motor works, including a discussion of the right-hand rule. They transform electrical energy into mechanical energy. The electric motors are not always obvious in devices, and you might need to do some background research about how the devices work to discover where their motors are hidden. We explain DC motors, single and three phase induction motors, synchronous motors, starting & testing, and much more. Motors rarely deliver force or torque that is independent of speed and drag is a strong function of speed - turbulent drag is approximately proportional to v 2. The current flows downward in both wires, and the magnetic field is pointing approximately outward when it reaches the wires on the side. Although the analogy is not perfect, there are striking similarities in how these systems work. Take the opportunity to look at some examples of the way in which electric motors are used in everyday life. Learn how magnetic forces acting on current-carrying wires can be used to drive an electric motor using our interactive simulation. How does a plug-in hybrid work? A hybrid car is like two cars in one: it has a conventional gasoline (petrol) engine for fast freeway driving and an electric motor for more economic, pollution-free travel (or idling). Until the growth of the power grid in the 1890s most people (middle and low classes) even in cities did not have the electric light in the home. Before the electric motor can be improved, though, people must learn how electric motors work. When required, energy is drawn from the electric-cells and converted to motive power by the use of one or more electric motors. Inside an electric motor, these attracting and repelling forces create rotational motion. Consequently, by the right hand rule, the force points "into the page" on the left side and "out of the page" on the right side, causing the wire to rotate around the battery. An electric motor is used to convert electrical energy into mechanical energy. What appears to be technological witchcraft is really just simple physics. ) A tiny electric motor does not have much torque, but it can spin really fast (small force, big distance). Motors which are used in simple circuits help in giving a better understanding of electricity, motion and technology to the students. The number of electric motors varies, as does the non-electric torque source. The famed inventor created the first electric generator, called the dynamo, as well as the first electric motor. A simple electric motor. It's down here, too. In a lamp this is to provide light, in a heater to give us heat and in an electrical car to drive us around. Up to 80 percent of the energy in the battery is transferred directly to power the car, making it a highly efficient mode of transportation. Also i show how a DC motor (with permanent magnets) is made and what is inside in such a motor. That is, when a motor is doing work and its shaft is turning, an EMF is generated. This month, I've decided to go back to basics and describe how the motor actually works. When an electric current flows through the coil, the coil. The stator has several overlapping windings equipoised by an electric angle of 120 degrees. How Electric Cars Work. Most electric motors work by electromagnetism, but motors based on other electromechanical phenomena, such as electrostatic forces and the piezoelectric effect, exist. Unfortunately, you will never generate enough power from a homopolar motor to power any domestic appliances but they are great fun to make and really useful for demonstrating the effects of electromagnetism and how electric motors work. How much power does a crane develop doing 60 000 J of work in 5. An electric car is driven by a DC electric motor, powered by one or two batteries. An electric motor is used to produce rotational motion from an electrical supply. TO CONSTRUCT A ELECTRIC MOTORS (D. This effect can be used to make an electric motor. The disc is actually part of an electric motor that rotates at a speed that is proportional to the product of the voltage and the current being supplied. The quantity that has to do with the rate at which a certain amount of work is done is known as the power. How do speakers work? Speakers come in all shapes and sizes, enabling you to listen to music on your iPod, enjoy a film at the cinema or hear a friend's voice over the phone. Electric cars use an on-board battery to store electrical energy, which is recharged by connecting it to an electricity supply (usually the 'mains'). By using both a conventional engine and electric motor, the best hybrids achieve significantly better fuel efficiency than their non-hybrid counterparts. Reason we have electrical circuits is to do some useful work for us. Parts of a ceiling fan The basic parts of a ceiling fan are an electric motor, capacitor, blades or paddles, metal arms, flywheel, rotor, encasement or 'motor housing,' and switch housing. The electric motor was made possible thanks to the discoveries of Franz Ernst Neumann and James Clerk Maxwell. I won't draw the whole circuit right now. How Does a Hair Dryer Work? The two important components of a hair dryer are the electric fan and the heating element (Fig. Links Electromagnetism Revision Questions gcsescience. The number of electric motors varies, as does the non-electric torque source. The electric motor Worksheet. Instead of converting all the potential energy in the motor into heat like a fossil fuel-powered car does, an electric car uses the forward momentum of the motor to recharge the battery. Let's learn a little bit about the dot product. Electric motors use magnets to convert electricity into motion. Of course, roadside surgery is one of the more unconventional uses for power drills, which are among the most common and versatile power tools on the market. If so, how do electric motors work? To have some inkling on what goes into making an electric motor work, it is best to have some basic knowledge on magnets. The wire is pushed in the opposite direction if the direction of the current through it is reversed. An electric motor is an electromechanical device that converts electrical energy into mechanical energy. Electric motors defined as electromechanical devices that convert electrical energy to mechanical energy. In order to translate an electrical signal into an audible sound, speakers contain an electromagnet: a metal coil which creates a magnetic field when an electric current. Electric cars are renowned for their instant torque deliveries which lead to ferocious acceleration off the line. An electric motor works through two main elements, with the first being opposing magnets and the second being a wire coil. Physics 4 Laboratory The Electric Motor Prelab Exercise Please read the Procedure section and try to understand the physics involved and how the ex-perimental procedure works. This is a great project for use in the classroom or at home. This effect can be used to make an electric motor. This month, I've decided to go back to basics and describe how the motor actually works. It works on an inefficient DC motor principle. The armature holds the rest of the components and is also the part of the motor that spins. So what does the dot product do? Why don't I give you the definition, and then I'll give you an intuition. The famed inventor created the first electric generator, called the dynamo, as well as the first electric motor. Up to 80 percent of the energy in the battery is transferred directly to power the car, making it a highly efficient mode of transportation. Electric motors have many uses. How much work is required to lift a 50 kg object straight up 10. Electric motors of alternating current. What appears to be technological witchcraft is really just simple physics. The most common type of electric motor is the brushed dc electric motor. Their main applications are in MEMS devices, which can be really tiny, and also there is a thought of applying this concept in ion thruster systems. In this section we will look at a practical use for this force. Energy is the ability to do work or apply force to move an object. When the component is connected to a three-phase alternating source, it creates a rotating magnetic field. 6 kg mass through a height of 1 m. how to build a working dc electric motor One of the Assessment Tasks that my son had to do for his Year 12 Physics course was to build a working DC electric motor. A resistor resists the flow of electric energy, turning it into heat energy. The size of the arrows represents the amount of each type of energy. How does this simple DC Motor work? Ask Question Thanks for contributing an answer to Physics Stack Exchange! Variation of electric field and current flowing. How Do All-Electric Cars Work? All-electric vehicles (EVs) have an electric motor instead of an internal combustion engine. They're everywhere! You'll find them in your car, your kitchen, bathroom, office. Nineteenth-century British physicist and chemist Michael Faraday paved the way for our modern electricity-driven world. A worksheet designed for the IGCSE physics and Coordinate science this contains the basic required for the electric motor. How Does an Electric Motor Work? (in layman's terms) If you're an electrical engineer, you know how an electric motor works. how does electric motor convert electrical energy to mechanical energy. Electrons have weak magnetic properties, but these usually cancel each other out. Energy comes in many forms. A-level Physics (Advancing Physics)/Motors. The ceiling fan capacitor torques up the electric motor, allowing it to start and run. AC motors are powered by AC current. Motor Efficiency & How to improve it? Electric motor is a type of machine which converts electrical energy into mechanical energy using the interaction between magnetic field and current in its winding to produce/generate force in the motor. Much has been written about choosing the right motor, estimating performance, installing the motor in your plane, and so on. The doorbell is a good example of how electromagnets can be used in applications where permanent magnets just wouldn't make any sense. Such sliding contacts are known as commutators. Learn how magnetic forces acting on current-carrying wires can be used to drive an electric motor using our interactive simulation. Once you've got the basic idea and understand the physical principles and the maths, you're ready to explore how. The motor is controlled by an electrical impulse, which may be triggered in a number of ways: by an electronic card reader, by a keypad or by a wireless remote control sensor. Generator effect, applications e. TO CONSTRUCT A ELECTRIC MOTORS (D. 6 × 10 × 1 = 6 J. is the wiring diagram correct (it doesnt show a variable resistor and it doesnt show what drives the control input of the traic? why are there two switches in the thing? does switch 2 close at high speed and thus shunt around the triac?. Electric motors affect almost every aspect of daily life. A simple electric motor can be built using a coil of wire that is free to rotate between two opposite magnetic poles. How do electric motors work? - Higher - OCR 21C. A simple direct current (DC) motor is illustrated below. In a motor, the wire is wound around a central block called an armature. Making your own Motor is an excellent introduction into the world of technology. The working principle of the electric motor mainly depends on the interaction of magnetic and electric field. The working of a DC motor is well explained in this video with the help of animation. com Member. Consequently, by the right hand rule, the force points "into the page" on the left side and "out of the page" on the right side, causing the wire to rotate around the battery. Hybrids also use an internal combustion engine—and can be fueled like normal cars—but also have an electric motor and battery. In an electric motor the magnetic force does all the work. It is important to understand that a generator does not actually 'create' electrical energy. Such sliding contacts are known as commutators. Electric motors have proven themselves to be among the greatest inventions of all time. Before the electric motor can be improved, though, people must learn how electric motors work. Such sliding contacts are known as commutators. How Electric Motors Work. The basic principles behind the technology are this: the electric vehicle's battery transfers energy to an electric motor, the motor turns a drive train, which then turns the wheels. This is a resource page from Physclips, a multi-level multimedia introduction to physics (download the animations on this page). You have 30 seconds to make an electric motor running in excess of ten thousand RPM. As the fan blades turn, they force air forward, toward the exhaust port (check out How Airplanes Work to find out what causes this). How does the. How does a Simple Electric Motor Work? The catapult effect (motor effect) is used to make a simple electric motor spin round. Motor effect of an electric current, electric motor, loudspeaker, Fleming's left-hand rule, F = BIL gcse physics 12. A3 How a Motor Works Key Question: How does a motor work? Materials for each group y From the Electric Motor kit: electric motor with the battery pack, 7-8 permanent magnets, 1 electromagnet, and the orange commutator disk y Four D-cell batteries* *provided by the teacher Online Resources Available at curiosityplace. But, the fan will not cause any flow of anything because there is. Motor Efficiency & How to improve it? Electric motor is a type of machine which converts electrical energy into mechanical energy using the interaction between magnetic field and current in its winding to produce/generate force in the motor. Reason we have electrical circuits is to do some useful work for us. Also i show how a DC motor (with permanent magnets) is made and what is inside in such a motor. When the component is connected to a three-phase alternating source, it creates a rotating magnetic field. An electric motor creates rotational, or circular, motion. First electric generator In short, in the presence of an electromagnetic field a current can move a wire and a wire movement can generate a current. The electric motor based on property of magnetic fields that causes them to repel each other, is the motive force for the functioning of countless instruments like the cordless power drill. The current flows downward in both wires, and the magnetic field is pointing approximately outward when it reaches the wires on the side. Electric cars use induction motors. In this section we will look at a practical use for this force. Since electric vehicles use an electric motor, the driver can take advantage of the motor's momentum when pressure is applied on the brakes. Foilboards: How the F*ck Do They Work? Wednesday March 4, 2015 My pursuit to grasp the physics at play when Laird tows in on these hovering boards out of an X-Men movie was accomplished while. Most electric motors develop their mechanical torque by the interaction of conductors carrying current in a direction at right angles to a magnetic field. systems also allow both the I. Regenerative braking uses an electric vehicle's motor as a generator to convert much of the kinetic energy lost when decelerating back into stored energy in the vehicle's battery. An electric motor is used to produce rotational motion from an electrical supply. TO CONSTRUCT A ELECTRIC MOTORS (D. The electric motor is a device which converts electrical energy to mechanical energy. It's down here, too. We can show this in a Sankey diagram (picture 6). A simple electric motor can be built using a coil of wire that is free to rotate between two opposite magnetic poles. Did you ever wonder how an electric generator works to produce electricity for your portable devices, tools, or power for your entire home? Learn the parts that work together to form a generator and the technology you should know when shopping for a generator of any kind. This reversed principle (Faraday's law of induction) was discovered in 1831 by Michael Faraday and as a matter of fact he discovered the operating principle of electromagnetic generators. The very simplest DC electric motors work by placing an electromagnet in a magnetic field made by a permanent magnet. 5 to 4 kW direct current (DC) electric motors, operated at 12 to 60 volts DC. An electric motor works on a very simple principle. In this lesson, you will learn what an electric motor is and how it works. How does this simple DC Motor work? Ask Question Thanks for contributing an answer to Physics Stack Exchange! Variation of electric field and current flowing. Like current, power is a rate quantity. How much power does a crane develop doing 60 000 J of work in 5. We will see one by one parts of a lift (called in British language) along with their contributions in. How Electric Motors Work. Students will construct electric motors, and through qualitative analysis. Reason we have electrical circuits is to do some useful work for us. Analysing simple electric motors in the classr oom Jeff Y ap 1 and Dan MacIsaac 2 1 Science Department, W illiamsville South High School, 5950 Main St, W illiamsville, NY 14221, USA 2 Department of Physics, SUNY ÐBuf falo State Colle ge, 1300 Elmw ood A ve, SC222, Buf falo, NY 14222, USA E-mail: [email protected] An electrical current reaches the motor and then enters coils of wire that are wrapped around a metal base. Trolling motors also allow users to operate them at slower speeds than they could with a standard fuel motor. Motor is a machine that converts electrical energy into mechanical energy by means of electromagnetic induction. How do they produce this immediate torque and why can't good old internal. In this fast age, it is highly popular because of its great utilities. Electric motors involve rotating coils of wire which are driven by the magnetic force exerted by a magnetic field on an electric current. how to build a working dc electric motor One of the Assessment Tasks that my son had to do for his Year 12 Physics course was to build a working DC electric motor. The electric motor is mainly classified into two types. is the wiring diagram correct (it doesnt show a variable resistor and it doesnt show what drives the control input of the traic? why are there two switches in the thing? does switch 2 close at high speed and thus shunt around the triac?. In this section we will look at a practical use for this force. The electric motor. An electric motor consists of two parts, the stator and the rotor. " And no, I am not going to name. In a motor Electrical energy is converted into Mechanical energy. The vehicle uses a large traction battery pack to power the electric motor and must be plugged in to a charging station or wall outlet to charge. Look at the diagram above. The dot product, frankly, out of the two ways of multiplying vectors, I think is the easier one. Until the growth of the power grid in the 1890s most people (middle and low classes) even in cities did not have the electric light in the home. How much work is required to lift a 50 kg object straight up 10. Making your own Motor is an excellent introduction into the world of technology. Although the video has already briefly explained how it works and made. An electric car is driven by a DC electric motor, powered by one or two batteries. An electric motor works through two main elements, with the first being opposing magnets and the second being a wire coil. [3] The Electric Motor (DC). The vacuum cleaner uses an electric motor that spins a fan, sucking in air - and any small particles caught up in it - and pushing it out the other side, into a bag or a. Most electromagnetic motors are rotary, but linear types also exist. If you aren't, it can be extremely confusing, therefore, here's the simplified explanation (or the "how an electric motor works for dummies" version) of how a four pole, three phase AC induction motor works in a car. An electric motor converts electricity into mechanical motion. The motor is controlled by an electrical impulse, which may be triggered in a number of ways: by an electronic card reader, by a keypad or by a wireless remote control sensor. The current flows downward in both wires, and the magnetic field is pointing approximately outward when it reaches the wires on the side. It manages to do so, quite effectively and efficiently, as it follows a set wash process. You will be provided with a kit of parts and equipment from which you will be challenged to build a working electric motor. The function of AC motors is based on the electromagnetic operating principle of the DC motor. The electric current operates the motor. A three-phase induction motor does not need a starting device to operate. This effect can be used to make an electric motor. CBSE class 10 Science - Magnetic Effects of Electric Current - Electric Motor works on the principle of Fleming's Left Hand Rule. Accessibility links. The traditional meter usually has a metal disc that rotates as power is consumed. It is written and maintained by a fully qualified British Physics Teacher. Electric cars use an on-board battery to store electrical energy, which is recharged by connecting it to an electricity supply (usually the 'mains'). Maxwell's equations are sort of a big deal in physics. The motor is controlled by an electrical impulse, which may be triggered in a number of ways: by an electronic card reader, by a keypad or by a wireless remote control sensor. Learn about carbon brushes and commutators and how they help electric motors work with information from a science teacher in this video. A capacitor is an electrical device used to store electrical energy. The brush design of the electric motor was discovered independently by several scientists and is used in many consumer appliances to this day! To unlock this lesson you must be a Study. An electric motor works through two main elements, with the first being opposing magnets and the second being a wire coil. In such an engine, the energy is transferred from the pistons moving up and down at high speeds. An electric motor is an electrical machine that converts electrical energy into mechanical energy. This is, in fact, how generators work. They are the AC motor and the DC motor. Electric Generators 101 : A Primer About How Generators Work. It could be transmitted by a third rail, overhead lines or induction from lines buried in the roadway and the vehicle may not even have a battery. Create a Passion for Engineering and explain very complicated Technologies in a simple way, To learn the quality of Engineering Education and inspiration. The most common type of electric motor is the brushed dc electric motor. How Do Electric Motors Work? Physics Books for Kids | Children's Physics Books [Baby Professor] on Amazon. When the component is connected to a three-phase alternating source, it creates a rotating magnetic field. The mechanism that actually causes electromagnetic force involves quantum physics and the transfer of photons, but the mechanics of an electromagnet are quite simple. This is a resource page from Physclips, a multi-level multimedia introduction to physics (download the animations on this page). The first two examples below assume constant acceleration - which is usually a chapter in introductory physics books. If you are interested in brushless DC motors, then better go to the page about how brushless DC motors work. We will use specific names to refer to the parts of a motor:. The current flows downward in both wires, and the magnetic field is pointing approximately outward when it reaches the wires on the side. Ultimately, motors are the interface between the electrical and mechanical systems of a facility. Remember that DC current flows in only one direction unless there is a switch to reverse its direction. How long does it take a 2. how does electric motor convert electrical energy to mechanical energy. So how do elevators or lifts work ? The car is connected to a pulley system through steel or metal cables. They all have a common result: The rotary motion of the motor axis. As taught in elementary science, a magnet is made up of two opposing poles known as the north and south poles. Regenerative braking uses an electric vehicle's motor as a generator to convert much of the kinetic energy lost when decelerating back into stored energy in the vehicle's battery. 6 × 10 × 1 = 6 J. Their structure is a coil mounted on an axel within a magnetic field. AC motors are powered by AC current. Electric motor, any of a class of devices that convert electrical energy to mechanical energy, usually by employing electromagnetic phenomena. How does a plug-in hybrid work? A hybrid car is like two cars in one: it has a conventional gasoline (petrol) engine for fast freeway driving and an electric motor for more economic, pollution-free travel (or idling). How do they produce this immediate torque and why can't good old internal. These batteries are not only used to power vehicles but also used for the functioning of wipers and lights. But electric cars do not have any complexity. An efficient motor transfers most of this energy as kinetic energy (useful work). How do electric motors work? - Higher - OCR 21C. Accessibility links. Once you've got the basic idea and understand the physical principles and the maths, you're ready to explore how. 6 × 10 × 1 = 6 J. Michael Faraday's electric magnetic rotation apparatus (motor) The first surviving Faraday apparatus, dating from 1822, which demonstrates his work in magnetic rotation. How Does an Electric Motor Work? DC Motors: AC Motors: Index DC Circuits Magnetic force concepts. So if I have two vectors; vector a dot vector b-- that's how I draw my arrows. The mechanical energy can be used to perform work such as rotating a pump impeller, fan, blower, driving a compressor, lifting materials etc. They look like a ring of copper which is split down the middle This is why it is called a split - ring commutator. Why are automobiles sometimes called "motorcars"? Many cars do have motors in them, but the device responsible for propelling them isn't a motor. The electric generator works in the opposite way of an electric motor. Accessibility links. Energy comes in many forms. 6 × 10 × 1 = 6 J. Students will construct electric motors, and through qualitative analysis. Electric Motors The defining characteristic of an electric motor is that it must be able to rotate freely through a complete circle and keep on turning. Read those pages first. They transform electrical energy into mechanical energy. Learn how magnetic forces acting on current-carrying wires can be used to drive an electric motor using our interactive simulation. Trolling motors also allow users to operate them at slower speeds than they could with a standard fuel motor. The armature holds the rest of the components and is also the part of the motor that spins. how does electric motor convert electrical energy to mechanical energy. Help with GCSE Physics, AQA syllabus A AS Level and A2 Level physics. 6 kg mass through a height of 1 m. The brush design of the electric motor was discovered independently by several scientists and is used in many consumer appliances to this day! To unlock this lesson you must be a Study. But, the fan will not cause any flow of anything because there is. What is a homopolar motor used for? In truth, they aren't that practical at all. Microwave bases rotate using electric motors. Inside an electric motor, these attracting and repelling forces create rotational motion. CBSE class 10 Science - Magnetic Effects of Electric Current - Electric Motor works on the principle of Fleming's Left Hand Rule. 5 minutes? 75 000 J 14. You can calculate the resistance for the circuit, or a portion of the circuit, by determining which resistors are in series and which are in parallel. The motor of a fan works because of electromagnets, and electromagnets do work in vaccum so the fan will also work in vaccum. The coil is positioned between two magnetic poles; when current passes through the coil, it experiences force in opposite directions caused by the poles of the magnet, and this causes movement. To understand this, realize that a spinning motor also acts like a generator. A few examples: Electronic car windows go up and down using motors. Electric motor. It works on an inefficient DC motor principle. Electric Motors The defining characteristic of an electric motor is that it must be able to rotate freely through a complete circle and keep on turning. This lab is intended to be fairly simple. To learn more about the technology involved, read How Electric Motors Work and How Electromagnets Work. A motor and generator perform opposite functions, but their fundamental structure is the same. As the fan blades turn, they force air forward, toward the exhaust port (check out How Airplanes Work to find out what causes this). What appears to be technological witchcraft is really just simple physics. ) While DC always flows in the same direction, AC goes from negative to positive many times a second. how does this circuit work with 2 coils. From Wikibooks, open books for an open world < A-level Physics (Advancing Physics) and so we have an electric motor. They look like a ring of copper which is split down the middle This is why it is called a split - ring commutator. An electric motor is used to convert electrical energy into mechanical energy. The presence of two power sources, makes a switching mechanism necessary. DC motors can be found in DVD or CD players, and the disk drive of a computer. The armature holds the rest of the components and is also the part of the motor that spins. Both water and electricity enter your home from the utility service lines and exit after being distributed throughout the house. What is a homopolar motor used for? In truth, they aren't that practical at all. How DC motors (universal motors) work I often get asked questions about motors, so I figured I'd do an article and video about how they work. Accessibility links. Because of these very simple idea, these motors do not need massive coils or enclosures: which makes it possible to make them as small as it's feasible, and also very easy to manufacture. Fun Facts about Electromagnetism and Electric Motors Some electric generators can be driven by human power such as a hand crank or a bicycle to generate electricity. How much work is required to lift a 50 kg object straight up 10. Best Answer: An electric car is a vehicle that is run by an electric motor. Foilboards: How the F*ck Do They Work? Wednesday March 4, 2015 My pursuit to grasp the physics at play when Laird tows in on these hovering boards out of an X-Men movie was accomplished while. (Basic law of physics: work = force x distance.