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The image shows copper wire coiled around an iron nail and connected to a battery to create an electromagnet. Which factors determine the strength of this electromagnet? A. the voltage of the battery and the size of the switch B. the number of coils of wire around the nail and the length of the wire in the circuit C. the size of the nail and the size of the switch. D. the amount of electric current and the number of wire coils around the nail



Answer :

AL2006

The amount of electric current in the coil and the number of turns of wire
in the coil directly determine the strength of the electromagnet.

But the voltage of the battery determines the amount of current through
the wire, so the battery voltage is also indirectly involved.


Answer:

c

Explanation:

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