Two charges of magnitude -2Q and +Q are located at points (a,0) and (4a,0) respectively . What is the electric flux due to these charges through a sphere of radius '3a' with its centre at the origin?

Two charge of magnitudes - 4Q and + 2Q are located at points (2a, 0) and (5a, 0) respectively. What is the electric flux due to these charges through a sphere of radius 4a with its centre at the origin?

Three charges of 2muC, 3 mu C and 4 mu C are placed at points A, B and C respectively, as shown in Fig. a Determine the force on A due to other charges.

Two charges - q and + q are located at points A(0,0, -a) and A(0,0, + a) respectively. How much work is done in moving a test charge from point P (7,0,0) to Q(-3,0,0)?

Two point charges of magnitude +q and -q are placed at (-d/2, 0, 0) and (d/2, 0, 0) respectively. Find the equation of the equipotential surface where the potential is zero.

Two charge 5 mu C and - 4 mu C are kept 5.0 m apart at points A and B respectively. How much work will have to be done to move the charge at A through a distance of 5.0 m further away from point B along the line BA

Co-ordinates of points P and Q are (-2,0) and (2,0) respectively .Find d(P,Q) .

Two charges of magnitude 5 nC and -2 nC are placed at points (2 cm, 0, 0) and (20 cm, 0, 0) in a region of space, where there is no other external field. Find the electrostatic potential energy of the system.

An electric potential is 10V throughout the space in a sphere of radius 0.2m^3 . What is the electric field in this region?

A charge of 6q is placed at the centre of a cube of side 2cm. What is the electric flux passing through two opposite faces of the cube?