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 reverse the orientation of his battery.
B.
He can use a thicker piece of the copper wire.
C.
He can increase the size and voltage of his battery.
D.
He can use longer wire for more coils around the nail.
1 answer
A. He can reverse the orientation of his battery.
2 answers