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Circuit Diagram and Electrical Components

If two cells ...

Question

If two cells are connected in series opposition in an electrical circuit, when does current flow? Assume only conductors are present.

A

Magnitude of emf of cells is same

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B

Size of cells is different

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C

Magnitude of emf of cells is different

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D

Always works irrespective of nature of cells

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Solution

The correct option is C Magnitude of emf of cells is different
For current to flow, a potential difference must exist. When two cells are connected in opposition, potential difference exists only when magnitude of EMFs of cells are different.hence option C is correct.

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