Charges `+q` and `-q` are placed at points `A` and `B` respectively which are a distance `2L` apart, `C` is the midpoint between `A` and `B`. The work done in moving a charge `+Q` along the semicircle `CRD` is

Charge +q and -q are placed at points A and B respectively which are distance 2L apart. C is the midpoint of A and B. The work done in moving a charge +Q along the semicircle CRD as shown in the figure below is

Charge +q and -q are placed at points A and B respectively which are distance 2 L apart . C is the mid point of A and B . The work done in moving a charge +Q along the semicircle CRD as shown in the figure below is

Two point charges +q and -q are placed at point A and B respectively which are at a distance 2m apart. C is the midpoint between A and B. The work done by external agent in moving a charge Q slowly along the triangular path CED (AC=BC=BD)

Two point charges +q and -q are placed at points A and B respectively separated by a samll distance. The electric field intensity at the midpoint O of AB :

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

Two charges -q and +2q are placed at A and B respectively. The distance between A and B is 12m . At a point P between A and B the potential is zero . Then , the distance of AP is :

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