Electricity and Magnetism Test Review

What two forces are required for generators and electric motors to work?

• magnetism and thermal

• electricity and thermal

• electricity and magnetism

• magnetism and radiant

Why is a compass needle attracted to the northern part of Earth?

• Wind is stronger in the northern part of Earth

• It is being attracted to the Magnetic South Pole

• It is being attracted to the Magnetic North Pole

• It is broken

The picture is an example of an:

• Electric circuit
• Electromagnet
• Electric nail
• Electric power cell

This is a picture of a simple electromagnet. How can the electromagnet be made stronger?

• Add more coils of wire to the nail.

• Decrease the current running through the wire.

• Reverse the poles of the magnet.

• Remove all the coils and the nail.

Which of the following is NOT TRUE about magnetic fields:

• Magnetic fields are why object can be pushed/pulled without touching the magnet

• Field lines move from North to South

• The magnetic field is stronger when the field lines are closer together

• The field is stronger further away from the poles

Transfer of electrons between two conductors due to two objects sliding against each other.

• Conduction

• Induction

• Friction

• Polarization

Magnetism is a type of ____________

• force
• book
• plant
• animal

A material where electrical charges can move easily is a....

• insulator

• conductor

• nothing

• rubber

When an object loses electrons, what is its charge?

• Positive

• Negative

• Neutral

• No charge

What is created when a wire moves between the poles of a magnet?

• an electric current

• a ferromagnet

• a solenoid

• an electromagnet