Please explain by giving reasons

Please explain by giving reasons Which of the following involves electromagnetic induction? (A) A rod is charged with electricity (B) An electric current produces a magnetic field. (C) A magnetic field exerts a force on a current-carrying wire. (D) the relative motion between a magnet and a coil produces an electric curren

The correct answer is (d) because electromagnetic induction is defined as the phenomenon of generation of electric current in a circuit or a coil due to change in magnetic field in the nearby circuit or closed coil.

Answer (a) is wrong as there is no electric current induced.
Answer (b) is wrong as here also electric current is not induced.
Answer (c) is wrong as the opposite of electromagnetic induction effect is happening

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