On increasing the resistance of the primary circuit of potentiometer, its potential gradient will

On increasing the resistance of primary circuit of potentiometer, its potential gradient

In potentiometer the potential gradient is –

Sensitivity of potentiometer can be increased by a) increasing series resistance in the primary circuit b) decreasing the length of potentiometer wire c) using thin and high resistivity wire as potentiometer wire d) increasing the length of the wire

A cell of negligible internal resistance is connected to a potentiometer wire and potential gradient is found. Keeping the length as constant, if the radius of potentiometer wire is increased four times, the potential gradient will become (no series resistance in primary)

A cell of negligible internal resistance is connected to a potentiometer wire and potential gradient is found. Keeping the length as constant, if the radius of potentiometer wire is increased four times, the potential gradient will become (no series resistance in primary)

If potentiometer wire of length L and resistance 10 Omega is connected in series with battery of emf 2.5 V and a resistance in its primary circuit.The null point corresponding to a cell of a emf 1 V is obtained at a distance L/2 .If the resistance in the primary circuit is doubled then the position of new null point will be

A potentiometer wire of length L and resistance 10 Omega is connected in series with a battery of emf 2.5 V and a resistance in its primary circuit. The null point corresponding to a cell of a emf 1 V is obtained at a distance L//2 . If the resistance in the primary circuit is doubled then the position of new null point will be.

Potential gradient of a potentiometer is equal to