Why are relays used in cars?

Question

Relays can be controlled by electrical power switches. The purpose of an automotive relay is to switch electrical circuits on and off at certain times. On Jun 29, 2017:

Hagrid P Hazard · Accepted Answer

Relays can be controlled by electrical power switches. The purpose of an automotive relay is to switch electrical circuits on and off at certain times. On Jun 29, 2017:

Why are relays used in cars?

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