Coiling wire around an iron core and applying an electric current through the wire creates a temporary magnet called an electromagnet.

Question

What would increase the strength of an electromagnet?
Responses
A Use a smaller nail.Use a smaller nail.
B Use a battery with less voltage.Use a battery with less voltage.
C Use a battery with more voltage.Use a battery with more voltage.
D Use fewer coils of wire around the nail.

Answer 1

C Use a battery with more voltage.