Ahmad made a very simple electromagnet out of a nail, copper wire, and a AAA-sized battery. His magnet was able to lift one paper clip from 2 centimeters away. Which of the following is NOT a way Ahmad can improve the strength of his electromagnet?
A. He can use a thicker piece of the copper wire.
B. He can reverse the orientation of his battery.
C. He can use longer wire for more coils around the nail.
D. He can increase the size and voltage of his battery.
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Ahmad made a very simple electromagnet out of a nail, copper wire, and a AAA-sized battery. His magn...
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