MCQ
The $\text{EMF}$ of a cell can be defined as:
- AWork done in taking a unit positive charge once round the circuit.
- BThe open circuit voltage of the cell.
- CThe terminal voltage when the current is zero.
- ✓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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Reason : $\mu = \frac{1}{{\sin \,C}}$ , where $\mu $ is the refractive index of diamond with respect to liquid