Question

what is mean by potential difference and electric potential. .??

Answer 1

The work done in moving a unit positive charge from infinity to a point is called electric potential.
The work done in moving a unit positive charge from one point to other is called potential difference.

Answer 2

this will be answer
POTENTIAL DIFFERENCE : potential difference between two points in a electric. field is the difference of the charge between two points when both points are connected with a conductor.