Question

Two uncharged conducting spheres, A and B, are suspended from insulating threads so that they touch each other. While a negatively charged rod is held near, but not touching sphere A, someone moves ball B away from A. How will the spheres be charged, if at all?A. 0, +B. - , +C. 0,0D. + , -E. - , 0

Answer 1

Since the rod is charged this means the end could be taken as negative, and thus when someone moves bal B away from A we will have that:

Ball A will have a + charge and ball B will have a negative charge. [Option D]