question_answer

Two copper spheres, A and B, are identical in all respect but A carries a charge of \[-3\mu C\] whereas B is charged to \[+1\mu C\] The two spheres are brought together until they touch and then separated by some distance. Which of the following statements is true concerning the electrostatic force F between the spheres?

A)  F = 0 as one of the spheres is uncharged

B)  F = 0 as both the spheres are uncharged

C)  F is attractive

D)  F is repulsive.