In a magnet: north poles __________ north poles

What happens to an electromagnet if you use more batteries?

When electricity flows it is called a __________________

Which of the following would be the better insulator? Plastic, copper wire, graphite

How can you change the direction of an electromagnet run on batteries?

A compass contains a small ___________ which can spin

What type of core makes an electromagnet stronger?

Which would need the strongest electromagnet? a) a bell b) an MRI scanner c) a loudspeaker

A force on a magnet or magnetic material is called....

Potential difference divided by resistance equals

What shows how difficult it is for current to flow through a circuit

Current in a circuit flows in which of the following directions listed below:a) In direction from high potential to low potential (b) In direction from low to high potential c) In direction of flow of electrons d) In any direction