Question

What is required for an electromagnet to produce a magnetic field that is

strong enough to be useful?
A. A coil of wire with current running through it
B. A magnetic metal core with wire wrapped around it
C. A permanent magnet
D. A magnetic metal core
SUBMIT

Answer 1

Answer:if you have different ans your may be a soleno with a current running though it.

Step-by-step explanation:

Ape.x