Electric Motor If you increase the number of coils in an electric motor, does that mean you are increasing current?
Also, do you know why increasing the number of coils leads to greater output of the motor? If anyone understands electric motors, please help me, because my text book is just not helping. Thanks soo much!
Increasing the number of coils (windings) increases the strength of the magnetic field from that winding.
Increasing the current *through* the windings also increases the magnetic strength, but the number of windings and the current are 2 separate things. You can do one (more windings), or you can do the other (increase the current), or you can do both, to get a stronger magnetic field.
Why does increasing the number of windings increase the motor strength??? It goes back to 2 laws of physics (that are related to one another. The Biot-Savart law says the magnetic field strength is proportional to the current in a straight wire.... and Ampere's law, which says the same thing (only in a more generalized case of magnetic fields that would come from coiled wires and other shapes). Just say "Ampere's law" for the 'why'.
A stronger magnetic field will make a stronger motor -- generally giving it more torque (depending on the exact *type* of motor -- but to explain that I have to get *really* technical, etc. etc.)
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Electric Conversion Made Easy - Electric Motors For Cars
As gasoline prices continue to rise, more and more people are looking for ways to lessen transportation costs. One of the solutions that many people have started to consider is electric motors for cars. This might just be the solution to feasible ways to cut extra costs when traveling. Instead of going on fewer vacations and other family trips, more and more people are turning to electric powered cars.
Electric powered cars appear to be attractive however there are still some people who have apprehensions about trading in their traditional cars for electric powered ones. These people believe that turning to electric motors for cars will only mean additional costs. Indeed, trading in your car would not be wise but what about the surging gas prices? The solution is merely changing or converting your current car engine to an electric one.
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