What do you understand by potential gradiednt ?
Establish a relation between electric field and potential gradient.

Define potential gradient.

Relation Between Electric Field and Potential Difference

What do you understand by static electricity?

Establish relation between electric field and potential gradient. Or Derive relationship between Electric field intensity and potential gradient at a point in the electric field.

Establish a relation between E.M.F. and potential difference of a cell.

The relation between electric charge, electric potential and capacity is

Relation between electric potential (V) and Intensity (E)