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 `6.5xx10^(-7) C`? The radii of A and B are negligible compared to the distance of separation.

Explanation

(a) `1.5 xx10^(2)` N
(b) 0.24 N