Question

what is potential difference?​

Answer 1

Suppose, a test charge q is moved in an electric

field from a point A to a point B while all the other

charges in question remain fixed If the electric

potential energy changes by U(b)-U(a) due to this

displacement, we define the potential difference

between the point A and the point B as

$v(b) - v(a) = \frac{u(b) - u(a)}{q}$

The potential at a point A is equal to the work done

per unit test charge by an external agent in moving the

test charge from the reference point to the point A

(without changing its kinetic energy).

Answer 2

Answer:

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