Question

define the potential difference between the two points ​

Answer 1

Potential difference between two points in a circuit is the amount of work done to move some amount of charge from one point to another in the electric circuit.

It's SI unit is Volt(V)

It's formula is

V= W/Q

Cheers!

Answer 2

potential difference between two points in a current Carrying conductor when 1 joule of work is done to move a charge of 1 coulomb From one point to another

1 volt = 1 joule/1 coulomb

which is,

V = W/Q