Question

A solid non conducting sphere charged in such a way that in it as we move away from the centre, the electric field decreases then which of the following statement is correct :

• A. the sphere in uniformly charged
• B. the potential at surface is less than that at its centre
• C. the potential at surface is more than that at its centre
• D. the potential at surface may be less than that at its centre

Answer 1

Answer: (D)

the potential at surface may be less than that at its centre

If the sphere is uniformly charged, electric field increases as one moves away from the centre.
Because $E\propto r$ inside the sphere. As $E=-\frac{dV}{dr}$ so the potential may be less than from its centre.