Question

Which factor has the greatest effect on the strength of an electromagnet?

A. The position of the ammeter in the circuit
B. The number of coils of wire around the core
C. The type of insulation that covers the wire
D. The distance between the battery and the electromagnet

Answer 1

B.

Step-by-step explanation:

The number of coils of wire around the core

Answer 2

B. The number of coils of wire around the core