Question

The image shows an electromagnet. How could you increase the strength of an electromagnet?
Responses
A Use more coils around the nailUse more coils around the nail
B Use a smaller nail.Use a smaller nail.
C Use a battery with less voltage.Use a battery with less voltage.
D Use fewer coils of wire around the nail.
GPT 3.5
A. Use more coils around the nail

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