Aqa Electromagnetism

Probably the most useful thing about electromagnets is that they can be turned ________ and ________.

• on, off

• positive, negative

• north, south

• on, negative

Tags

NGSS.MS-PS2-5

If you cut a magnet in half, what happens to the poles?

• One half gets the North Pole, the other half gets the South Pole

• Both halves get only a North Pole

• Both halves get only a South Pole

• Both halves get a North pole and a South Pole

What is responsible for the Magnetic Field around Earth?

• The Earth's crust

• The Earth's molton iron core

• The Earth's mantel

• The Sun

What device takes in mechanical energy and produces electricity?

• motor

• generator

• electromagnet

• battery

Tags

NGSS.MS-PS3-5

Magnets have a north and a south ___________

• shape

• color

• pole

• region

A current is produced when _______________ flow in a circuit.

• protons

• neutrons

• electrons

• nucleons

Electric current is measured in ____________.

• Newtons (N)

• Amperes (A)

• Hertz (Hz)

________________ are the attractive and repulsive forces between two poles.

• Magnetic forces

• Electric forces

• Magnetic charges

• Electric charges

Tags

NGSS.MS-PS2-3

How do you increase the strength of an electromagnet?

• Add a motor and/or light bulbs

• Add more light bulbs and wire coils

• Add more wire coils

• Increase the voltage

What is/are the difference(s) between a magnet and an electromagnet?

• An electromagnet can be turned on/off.

• A magnet can be turned off.

• An electromagnet is stronger.

Tags

NGSS.MS-PS2-3