Write the advantages of a potentiometer.
(N/A) potentiometer is a versatile instrument used for measuring potential differences and internal resistance. Its main advantages are:
$1$. It works on the principle of null deflection,meaning no current is drawn from the source of $EMF$ being measured. Therefore,it measures the true $EMF$ of the cell.
$2$. It does not affect the circuit conditions because it does not draw any current from the circuit under test.
$3$. It is highly sensitive and can be used to measure very small potential differences.
$4$. It can be used to compare the EMFs of two cells and to determine the internal resistance of a cell.
$1$. It works on the principle of null deflection,meaning no current is drawn from the source of $EMF$ being measured. Therefore,it measures the true $EMF$ of the cell.
$2$. It does not affect the circuit conditions because it does not draw any current from the circuit under test.
$3$. It is highly sensitive and can be used to measure very small potential differences.
$4$. It can be used to compare the EMFs of two cells and to determine the internal resistance of a cell.
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