What is a spark also known as?

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Multiple Choice

What is a spark also known as?

Explanation:
A spark arises because a changing current in a coil induces a voltage in the same circuit to oppose the change. This self-induced voltage, or back-EMF, can bridge the gap and create an arc. So the mechanism behind the spark is self-induction—the coil’s own changing current generates the voltage that drives the spark. Back-EMF describes the voltage produced by that process, while electromotive force is the general term for voltage and inductive reactance is about AC opposition, not the spark itself.

A spark arises because a changing current in a coil induces a voltage in the same circuit to oppose the change. This self-induced voltage, or back-EMF, can bridge the gap and create an arc. So the mechanism behind the spark is self-induction—the coil’s own changing current generates the voltage that drives the spark. Back-EMF describes the voltage produced by that process, while electromotive force is the general term for voltage and inductive reactance is about AC opposition, not the spark itself.

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