Suppose you have a wire connected to a piece of iron making an electromagnet. If you cut the voltage in half but double the number of turns of wire, what happens to the strength of the electromagnet?
It switches direction
It is 2 1/2 times stronger than it was before
It stays approximately the same
those are the choices and i need help...if someone culd help me out it would be great
2007-03-22
18:25:59
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6 answers
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asked by
Mark M
1
in
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