Question 1

If electric current (moving electric charge)  flows through a wire, what is created?

Accepted Answer

a magnetic field

Answer

a switch

Answer

a light

Answer

a battery

Question 2

What is a unique feature of an electromagnet?

Accepted Answer

you can turn it on and off

Answer

it is permanent

Answer

it is weaker than a bar magnet

Answer

it only works when it is heated up

Question 3

What is required for an electric charge to generate a magnetic field?

Accepted Answer

The charge must be moving in a current (flowing as electricity)

Answer

The electric charge must  be part of an iron object

Answer

The electric charge must be extremely powerful

Answer

The electric charge must be positive

Question 4

What is one way to make an electromagnet stronger?

Accepted Answer

Wrap the electromagnet with more coils of wire

Answer

use less charge from a power source

Answer

Put a plastic core inside the electromagnet

Answer

Increase the distance between objects

Question 5

What is one important application of electromagnetism in everyday life?

Accepted Answer

electric motors in machines

Answer

cardboard box packaging

Answer

microscope images of small objects

Answer

bicycles

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