Physics Revision FIRST (1) quiz

Describe the following illustration using the concepts learned in the lessons.

• Attract

• Repel

Describe the following illustration using the concepts learned in the lessons.

• Attract

• Repel

A motor uses uses a small current in one circuit to operate a switch in another circuit.

• True

• False

What is wrong with this sentence?
A motor uses uses a small current in one circuit to operate a switch in another circuit.

• Change "motor" to "relay"

• It is not wrong

Only certain materials are attracted to magnets.

• True

• False

A core is a magnetic material in the center of the coil of an electromagnet.

• True

• False

A special fluid that is magnetic is called a ferrofluid.

• True

• False

If the magnetic field lines are closer together this shows the magnetic field is weaker.

• True

• False

What is wrong with this sentence?
If the magnetic field lines are closer together this shows the magnetic field is weaker.

• Change "weaker" to "stronger"

• It is not wrong.

The MCB melts creating a gap in the circuit.

• True

• False