Motor Parts

Front

What is the purpose of the commutator in a motor?

Back

To reverse the direction of current in the motor windings.

Front

What is the stator?

Back

The stator is the stationary component of an electric motor or generator.

Front

In a motor, an armature

Back

The armature is the rotating part of a motor.

Front

What is an electric motor used for?

Back

Converting electrical energy into mechanical energy

Front

How can the speed of the motor be increased? Options: Use a motor made with fewer turns of wire. Use a smaller d.c. voltage. Use a stronger magnet in the motor. Use the supply with its connections reversed.

Back

Use a stronger magnet in the motor.

Front

When the motor is connected to a battery, the loop rotates. When the motor is disconnected, the loop stops rotating. Which of these statements best explains why the loop only turns when the motor is connected to the battery? A motor is created when a copper loop is placed between two permanent magnets as shown in the diagram below.

Back

The battery moves electrical charges through the loop creating a magnetic field.