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18 April, 20:56

If you make an electromagnet using a battery circuit and a steel nail, how can you increase its magnetic strength? A. replace the nail with a copper rod B. wrap more coils of wire around the nail C. use a longer nail D. remove the plastic insulation from the wire coil

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  1. 18 April, 21:02
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    We can increase the strength of an electromagnet by wrapping more coils of wire around the nail.
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