| A hollow metal sphere of radius 5 cm is charged such that potential at its surface is 10V. The potential at the centre of the sphere is |
| a) | Zero | b) | 10 V |
| c) | Same as at point 5cm away from the surface | d) | Same as at point 10cm away from the surface |
| (b)Electric field inside a spherical charge is everywhere zero, hence, inside a spherical charge the potential at all points is the same and its value is equalto that on the surface.∴ Potential at surface=10V. |