8.17 Summative assessment

The region around a magnet where the magnetic forces act is the ____.

• electromagnetic pole

• magnetic domain

• magnetic field

• magnetic pole

What is the function of the electric motor?

• It changes chemical energy to electrical energy.

• It changes electrical energy to mechanical energy.

• It changes mechanical energy to electrical energy.

• It changes electrical energy to chemical energy

What is the function of the electric generator?

• It changes chemical energy to electrical energy.

• It changes electrical energy to mechanical energy.

• It changes mechanical energy to electrical energy.

• It changes electrical energy to chemical energy

There is an attractive force between two charged objects when

• the charges are unlike

• the charges are the same

• they have the same number of protons

• they have the same number of electrons

Which circuit below is wired as a series circuit?

• Circuit A

• Circuit B

• Both circuits

• Neither circuit

Which circuit below is wired as a parallel circuit?

• Circuit A

• Circuit B

• Both circuits

• Neither circuit

Which circuit below is the type of circuit that causes an entire string of decorative lights to stop working when one bulb burns out?

• Circuit A

• Circuit B

• Both circuits

• Neither circuit

How do you make an electromagnet stronger?

• add a motor and/or lightbulb

• add more light bulbs and/or wire coils

• add more wire coils and/or a switch

• add more wire coils and/or batteries

__________ is a flow of electrons through a wire.

• static electricity

• current electricity

• circuits

• load

How are electromagnets different from permanent magnets?

• Permanent magnets can be turned on/off

• You can turn an electromagnet on/off

• Permanent magnets are more powerful

• Only electromagnets have a North and South pole