Question

PLEASE HELP ME!!!

If you make an electromagnet using a battery circuit and a steel nail, how can you increase its magnetic strength?

A.
replace the nail with a copper rod

B.
wrap more coils of wire around the nail

C.
use a longer nail

D.
remove the plastic insulation from the wire coil

Answer 1

b.wrap more coils of wire around nail
this is the answer because the more coils the stronger the electrmagnet