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.

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 charges 2 mu C and -2 mu C are placed at points A and B 6 cm apart. Identify an equipotential surface of the system

Two point charges 20 xx l0^-6C and -4 xx l0^-6C are separated by a distance of 50cm in air. Calculate the electrostatic potential energy of the system.

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?

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 circles of radii 5.5cm and 4.2cm touch each other externally. Find the distance between their centres.

Determine the electrostatic potential energy of a system consisting of two charges -2 muC and +4 muC (with no external field) placed at (-8 cm, 0, 0) and (+8 cm, 0, 0) respectively, (b) Suppose the same system of charges is now placed in an external electric field. E = A(1//r^2) , where A = 8 xx 105 cm^-2 , what would be the electrostatic potential energy of the configuration.

Two point charges of magnitudes +100muC and -400muC are kept 30 cm apart. Find the point of zero potential on the line joining the two charges.

The position of points O (0,0) and P (2,-2) in the region of graph of inequation 2x-3ylt5 , will be