Motors and Generators

Generators generate

• electricity

• mechanical energy

• heat

• chemical energy

The area surrounding a magnet that applies a force without touching the object.

• magnetism

• magnet

• magnetic theory

• magnetic field

Like poles of a magnet

• attract

• repel

Opposite poles of magnets

• attract

• repel

An electromagnet includes

• heat

• insulators

• magnetism

• electricity

What device transforms mechanical energy into electrical energy?

• Electric Motor

• Generator

What device transforms electrical energy into mechanical energy?

• Electric Motor

• Generator

What is formed when a wire in an electric circuit is wrapped around an iron core producing a magnetic field?

• electromagnet
• generator
• magnet
• electric motor

Which best describes how a motor works?

• When a fan blows on a wire, it causes it to spin, creating a force.

• When a fan blows on a wire, it causes it to spin, creating an electrical current.

• When a wire that carries electrical current is placed in zero gravity, the wire experiences a force.

• When a wire that carries electrical current is placed in a magnetic field, the wire experiences a force.

The commutator is

• The spring-loaded connections that keep contact with the stator

• the split ring that swaps the coils ends between positive and negative as the coil rotates

• the magnets that cause the electromagnet to attract and repulse

• the coil that is also known as the armature