Ellie made an electromagnet with wire, a nail, and a 2.5-volt battery. The electromagnet attracted a paper clip from 2 inches away.
What action will make the electromagnet weaker?
(1 point)
Responses
A. She can use a thicker piece of wire.
B. She can use a higher voltage battery.
C. She can wrap the wire more times around the nail.
D. She can decrease the number of coils around the nail.