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Question

Question
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

She can use a thicker piece of wire.
She can use a thicker piece of wire.

She can use a higher voltage battery.
She can use a higher voltage battery.

She can wrap the wire  more times around the nail.
She can wrap the wire  more times around the nail.

She can decrease the number of coils around the nail. 
She can decrease the number of coils around the nail. 
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Answer 1

She can use a thinner nail.