Electricity and Magnetism Quiz

Electric currents always produce magnetic fields.

• True

• False

Electric currents generate magnetic fields around them when the appliance is being used.

• True

• False

Electromagnets are a type of permanent magnet.

• True

• False

Electromagnets are temporary magnets created by electric currents

• True

• False

By adjusting the current, you can control the strength of an electromagnet

• True

• False

An advantage of electromagnets over bar magnets is that you can easily vary the strength of the magnetic field.

• True

• False

Magnetic field around a solenoid is the same shape as the magnetic field around a bar magnet.

• True

• False

A solenoid's magnetic field exists only when current flows through it

• True

• False

When current flows through the cable, it produces a magnetic field.

• True

• False

A solenoid always has a magnetic field around it, even when it is not carrying an electric current.

• True

• False