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A connection between electricity and magnetism can be observed if:A.a magnet is sitting near a wire that has no current flowing in it.B.a current-carrying wire overheats and melts.C.a current-carrying wire makes a compass needle move.D.a current-carrying wire vibrates.

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ANSWER

C. a current-carrying wire makes a compass needle move

Step-by-step explanation

The connection between electricity and magnetism is observed when both a magnetic and an electric field are created.

A current-carrying wire creates an electromagnetic field around it - i.e. it creates both types of fields mentioned above. Because it creates a magnetic field, it will make a compass needle move since a compass works with a magnetic field - usually Earth's magnetic field.

Hence, of these options, "a current-carrying wire makes a compass needle move" shows the connection between electricity and magnetism.

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