MCQ
The $\text{EMF}$ of a cell can be defined as:
  • A
    Work done in taking a unit positive charge once round the circuit.
  • B
    The open circuit voltage of the cell.
  • C
    The terminal voltage when the current is zero.
  • All the above.

Answer

Correct option: D.
All the above.

$\text{EMF}$ of cell can be defined as:
$\rightarrow $ Workdone in taking unit positive charge once round the circuit.
$\rightarrow $ The open circuit voltage of cell.
$\rightarrow $ The terminal voltage when current is zero.

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