What would be the work done if a point charge + q is taken from a point A to the point on the circumference of a circle with another point charge +q at the centre?

What whould be the work done, if a point charge .+q. is taken from a point A to a point B on the circumference of a circle drawn with another point charge +q at the centre?

The set of all the points on the circumference of a circle.

If a point charge +q is taken first from A to C and then from C to B of a circle drawn with another point charge +q as centre as shown in the figure, then along which path more than will be done.

If three points P, Q, R are taken at random on the circumference of a circle, the chance that do not lie on the same semicircle is

5J work is done in moving a positive charge of 0.5 C between two points. What is the potential difference between these points?

What is the work done in moving a 2muC point charge from corner A to corner B of a square ABCD as shown in the figure, when a 10muC charge exists at the centre of the square?