Question

How can you strengthen the magnetic force of an electromagnet? (check all that apply)

(I'M TAKING TEST PLEASE HELP)

A. Increase the voltage of the battery attached to the electromagnet.

B. Increase the wire coils wrapped around the metal core.

C. Spread out the wire coils wrapped around the metal core.

D. Increase the number of batteries attached to the electromagnet.​

Answer 1

These are the only 3 ways:

1 wrapping the coil around a piece of iron (such as an iron nail)

2 adding more turns to the coil.

3 increasing the current flowing through the coil.