what is potentiometer? compare the emf of two cells using potentiometer.
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potentiometer is an instrument used to measure the emf of the cell and the internal resistance of the cells.
To compare the emf of the two cells can be use by the given formula
E1/E2=L1/L2
where L1 and L2 are the length of the given wires and E1 and E2 are the emf of the cells.
To compare the emf of the two cells can be use by the given formula
E1/E2=L1/L2
where L1 and L2 are the length of the given wires and E1 and E2 are the emf of the cells.
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