Unit Eight Test: Electricity and Magnetism 23-24

A ________ is a device that converts motion into electrical energy.

• generator
• motor

A ________ is a device that converts electrical energy in to motion.

• generator
• motor

Examples of items that use electric motors: (choose all correct answers)

• 
• 
• 
• 

Direct current is DC and is used mainly in: (choose all correct answers)

• batteries
• homes
• battery-operated devices
• buildings

Alternating current is AC and is used mainly in: (choose all correct answers)

• batteries
• homes
• battery-operated devices
• buildings

We know that magnets attract and repel creates motion; add the fact that electricity can create a magnet and we have invented:

• a lightbulb
• an electric motor

These magnets will:

• repel
• attract

These magnets will:

• repel
• attract

An _______________ is a powerful magnet that can be turned on and off using electricity.

• neodimium
• bar magnet
• electromagnet

The formula for calculating electric current:

• I=V/R
• C=AxH