DEFINITION: A potential gradient is the space rate of change of potential with distance.
If the dielectric is homogeneous and the electric field is steady and uniform, the potential gradient is a constant.
Potential Gradient is denoted by g.
It is defined as :-
g=dVdx
When the potential gradient is a constant, then
g=Vt volt per unit thickness
where, V = the potential difference between the dielectric of thickness t
Potential gradient is expressed in volts per meter.
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