Magnitude of work done during the charging of a condenser from q=0 to q=Q is

The work done to move a unit charge along an equipotential from P to Q

A charge +q is placed at the origin of X-Y axes as shown in the figure. The work done in taking a charge Q from A to B along the straight line AB is

Find the electric work done in bringing a charge q from A to B in a sphere of charge Q distributed uniformly throughout its volume. .

Find the electric work done in bringing a charge q from A to B in a sphere of charge Q distributed uniformly throughout its volume. .

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 is the work done in increasing the charge from Q_(1)" to "Q_(1) +delta_(1)+deltaQ_(1) , if the potential difference between the plates is V?