Question

A glass rod rubbed with silk is brought close to two unchanged metallic spheres in contact with each other inducing charges on them as shown in Figure. Describe what happens, when

(i) the spheres are slightly separated

(ii) the glass rod is subsequently removed and finally

(iii) the spheres are separated far apart

Answer 1

1. On separating the two spheres, the right face of the sphere A will acquire positive induced charge and the left face of B will acquire negative induced charge.
2. If the glass rod is removed, the charges on the two spheres will disappear.
3. In this case also, the charges on the spheres will disappear.