An electromagnet can be made by wrapping coils of wire around a nail and running a current through the wire. How can the strength of the electromagnet be maximized?
A. The thickness of the nail and the number of coils around the nail should be maximized.
B. The current and length of the nail should be maximized.
C. The current and number of coils around the nail should be maximized.
D. The length and the thickness of the nail should be maximized.
1 answer
C. The current and number of coils around the nail should be maximized.
2 answers