Define potential gradient.

As is the cross sectional area and rho is the specific resistance of a potentiometer wire. If I is the current passing through the potentiometer wire, then the potential gradient along the length of the wire is given by

Show that the electric field intensity at a point can be given as negative of potential gradient.

In potentiometer the potential gradient is –

Assertion :- Imbibition is dependent on diffusion and water potential gradient. Reason:- Diffusion and water potential gradient create ability of surface adhesion

Electric potential gradient is a ………… quantity and is numberically equal to …………… .

What is the unit of potential-gradient ? If the potential gradient along the potentiometer wire be decreased, will the zero-deflection position be obtained at longer length or shorter length ?

On what factors, does the potential gradient of the potentimeter wire depend?

If the value of potential gradient on potentiometer wire is decreased, then the new null point will be obtained at