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OpenStudy (anonymous):
The image shows copper wire coiled around an iron nail and connected to a battery to create an electromagnet. How can the magnetic field of this electromagnet be increased? A. Replace the nail with a plastic tube. B. Increase the number of coils around the nail. C. Decrease the number of coils around the nail. D. Shorten the length of wire between the battery and the nail.
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OpenStudy (anonymous):
OpenStudy (anonymous):
@sleepyjess
OpenStudy (anonymous):
I WILL MEDAL
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