Question

Short notes of relays of circuit.

Answer 1

Answer:

a circuit contains battery cell led connecting wires bulb etc

Answer 2

Answer:

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♥ A relay is a form of electrical switch that is operated by electromagnet which changes over the switching when current is applied to the coil.

♥ These relays may be operated by switch circuits where the switch cannot take the high current of the electrical relay, or they may be operated by electronic circuits, etc.