What causes an electric motor to spin?

A coil of wire becomes an electromagnet when current passes through it. The electromagnet interacts with a permanent magnet, causing the coil to spin. Voilà! You’ve created an electric motor.

What keeps a motor spinning?

One end of the coil is attached to each half of the commutator. The electric current from the battery connects to the motor’s electric terminals. … This means the force on each side of the coil is always pushing in the same direction, which keeps the coil rotating clockwise.

What forces are acting on the motor to make it spin?

Electric motors use the forces produced by magnetic fields to produce a turning motion. If you put a length of wire in a magnetic field and pass a DC current through it (such as from a battery), the wire will move. This is called the motor effect .

What causes the coil to continue spinning when current is not flowing?

When the switch is closed, the current starts to flow and the coil becomes an electromagnet. … If the current in the coil were constant, the coil would stop in this position. However, to keep it spinning, the commutator breaks contact in this position. So the current stops for an instant.

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How can a motor spin fast?

One easy way to make the motor run faster is to add another magnet. Hold a magnet over the top of the motor while it is running. As you move the magnet closer to the spinning coil, one of two things will happen. Either the motor will stop, or it will run faster.

How does electricity drive a motor?

An electric motor is an electrical machine that converts electrical energy into mechanical energy. Most electric motors operate through the interaction between the motor’s magnetic field and electric current in a wire winding to generate force in the form of torque applied on the motor’s shaft.

How does a motor create rotation?

A coil of wire carrying a current in a magnetic field experiences a force that tends to make it rotate. This effect can be used to make an electric motor.

How does the coil spin in an electric motor?

A coil of wire becomes an electromagnet when current passes through it. The electromagnet interacts with a permanent magnet, causing the coil to spin. Voilà! You’ve created an electric motor.

How does a spinning motor work?

When you give the coil a spin, since one side of the wire is insulated, you break the circuit briefly, so the coil continues to rotate using its momentum. When the circuit is complete again, the magnetic field once again repels the coil, so it keeps spinning. The motor can continue to spin until the battery is dead!

What factors will affect the rotation of the simple electric motor?

The speed of rotation of the coil can be increased by:

  • increasing the size of the current;
  • using a stronger magnet;
  • increasing the number of turns of wire in the coil;
  • reducing friction between the coil and the axel it rotates on.
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What makes a motor more powerful?

The strength of the motor (torque) is determined by voltage and the length of the wire in an electromagnet in the stator, the longer the wire (which means more coils in the stator) the stronger the magnetic field. This means more power to turn the rotor.

How do I lower the RPM on my electric motor?

A couple of things you can do:

  1. Use gears to change ratio of speed, which is what you’re going to do. …
  2. Use a stepper motor, which are commonly used for high-torque, low RPM applications.
  3. Find some sort of PWM control circuit to slow it down, although you probably won’t be able to get it down to 5-10RPM.
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