Distinguish between a closed circuit and an open circuit, with the use of suitable labelled diagram.

The differences are —

Closed circuit Open circuit
Current flows only in a closed circuit Current does not flow in an open circuit.
For an electric circuit to be closed, each component of it must pass current through it, i.e., it should be conducting If there is an insulator in the path (or the circuit is broken), the circuit is incomplete (or open) and the current will not flow through it.

The diagram below shows closed and open circuits:


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