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Sully uses a battery and a coil of wire to create an electromagnet. Using the same materials, if he wants to increase the strength of his electromagnet, he must ___________the number of loops in the coil of wire along its length. If he uses an additional battery, the strength of his electromagnet will ________

Answer :

Increase.
I hope this helps :) 
The answer is increase on both of them I believe! 

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