Two insulated charged copper spheres A and B have their centres separated by a distance of 50 cm. What is the mutual force of electrostatic repulsion if the charge on each is `6.5 xx 10^-7 C`? The radii of A and B are negligible compared to the distance of separation.

Two insulated identically sized charged copper spheres A and B have their centers separated by a distance 50 cm. Charges on each sphere is q=6.5× 10^(-7) C. A third sphere of the same size but uncharged is brought in contact with the first, then brought in contact with the second, and finally removed from both. What is the new force of repulsion between A and B?

Two point charges 4Q and Q are separated by a distance of 1 m in air. Also calculate the electrostatic potential energy of the system of two charges, taking Q = 2 xx 10^-7C .

Two equal charges placed in air and separated by a distance of 2 m repel each other with a force of 10^-4 N. Calculate the magnitude of either of the charges.

Two charges 1C and 2C are separated by a distance of 1 m, in air. If the force experienced by the charge of 2C when the charges are (a) like (b) unlike.

Two point charges 4 mu C and -2 muC are separated by a distance of 1 m in air. At what point on the line joining the charge is electric potential zero?

Two points charges q_1 = 10 xx 10^-8 c and q_2 = -2 xx 10^-8 C are separated by a distance of 60cm in air. Also calulate the electrostatic potential energy of the system.

Two points charges +10muC and -10muC are separated by a distance of 40 cm in air. How much work is required to separated the two charges infinitely away from each other?

Two equal charges placed in air separated by a distance 3 m repel each other with force 0.1 g f. Calculate the magnitude of either of the charges.