Electricity Unit Test

Electricity has a _________________________. This word also means how much electricity is stored.

The charge can be (+) _________________________ or (-)_________________________.

Electricity flows easily through a _________________________.

Which of these is an example of a conductor?

• copper wire

• rubber

• glass

• wood

Electricity does not flow well through an _________________________.

Which of these is an example of an insulator?

• rubber

• iron

• water

• copper

On the right is a diagram of a _________________________.

Which is connected correctly?

• 
• 

Which is a short circuit and will overheat the batteries?

• 
• 

Look at the diagram and compare the 3 circuits. Which battery connection makes more power, makes the motor run faster, and runs for a short time?

• A

• B

• C