Unit Review - Magnetism & Electricity

Front

What materials are permanent magnets made out of?

Back

Cobalt, nickel, and iron.

Front

What does the right-hand rule indicate about the direction of the magnetic field?

Back

If you hold a wire in your right hand and point your thumb in the direction of the positive current, the direction your fingers curl is the direction of the magnetic field.

Front

What is an insulator?

Back

A material that does NOT allow heat and electricity to pass through it.

Front

Where are magnetic fields strongest?

Back

At both poles.

Front

What happens to the strength of a solenoid when you add loops of wire?

Back

It increases.

Front

What is a conductor?

Back

A material that allows heat and electricity to pass through it.

Front

Define magnetism.

Back

A force that can attract or repel certain materials, primarily metals like iron.

Front

What is an electromagnet?

Back

A type of magnet in which the magnetic field is produced by an electric current.

Front

What is the difference between AC and DC current?

Back

AC (Alternating Current) changes direction periodically, while DC (Direct Current) flows in one direction.

Front

What is the unit of electric current?

Back

Ampere (A).