Magnetism

Front

Look at the electric circuit above:

Back

The circuit is open.

Front

What is electric current?

Back

A flow of electric charges.

Front

How can the electromagnet be made stronger?

Back

Add more coils of wire to the nail.

Front

What is the device seen here? Options: generator, electric motor, electromagnet, magnet

Back

electromagnet

Front

Why does rubbing a balloon on a wool jumper cause a build up of static electricity?

Back

Friction between the two surfaces causes electrons to build up on one side.

Front

If a magnet is pushed into a coil with twice the number of loops, what happens to the induced voltage?

Back

Twice as much voltage is induced.

Front

In an electric motor, the coil of the electromagnet is connected to a ________ or other source of electric current.

Back

battery 

Front

The picture shows a device made of a battery, a nail, and a long piece of copper wire. It converts electrical energy into a different form of energy. Which term describes the device? Options: electric switch, electromagnet, electric motor, electric generator

Back

electromagnet

Front

What type of force is holding this balloon to the wall? Options: Applied, Gravitational, Magnetic, Electrical

Back

Electrical

Front

What type of force causes these balloons to move toward or away from each other? Options: Gravitational, Applied, Magnetic, Electrical

Back

Electrical