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Distinguish between emf and terminal voltage of a cell.

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#### Solution

Emf |
Terminal voltage |

It is the maximum potential difference that can be delivered by a cell when no current flows through the circuit. | It is the potential difference across the terminals of the load when the circuit is switched on and a current flows through it. |

It is represented by E and remains constant for a cell. |
It is represented by V and depends on the internal resistance of the cell. |

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