Physics, 16.03.2020 20:26, nauticatyson9

An electromagnet is a temporary magnet made by coiling wire around an iron core which becomes a magnet when an electric current flows through the wire.
How could the strength of an electromagnet be increased?
A) Use fewer coils of wire around the nail.
B) Use more coils of wire around the nail.
C) Use a battery with less voltage.
D) Use a smaller nail.

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An electromagnet is a temporary magnet made by coiling wire around an iron core which becomes a magn...