Asked by Sophea

Read the passage about Andreas.

Andreas has to make an electromagnet in his science class. He was only given a nail, copper wire, and a 9-volt battery. The assignment was to make a magnet strong enough to pick up paper clips. His teacher decided to make the assignment into a competition to see whose magnet could pick up the most clips.

What can Andreas do to his magnet to make sure he wins by picking up the most paper clips?
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1 point
Andreas can wrap few coils of the wire, far apart, around the nail.
Andreas can wrap many coils of the wire, far apart, around the nail.
Andreas can wrap few coils of the wire, close together, around the nail.
Andreas can wrap many coils of the wire, close together, around the nail.

All Answers 1

Answered by GPT-5 mini AI
Andreas can wrap many coils of the wire, close together, around the nail.

More turns and tight, close coils increase the magnetic field strength around the nail, letting it pick up more paper clips.