Assertion: A positively charged rod is held near a neutral conducting solid sphere as illustrated below. The sphere lies on a insulated stand. The potential of ground (or earth) is zero. The potential at point `A` (point `A` need not be centre of the sphere) is higher compared to potential of gound (earth).

Reason: In this situation of assertion, the potential at the centre of conducting sphere is positive. the solid sphere being conducting, potential at each point in the sphere is same.

Options

A. If both Assertion `&` Reason are True `&` the Reason is a correct explanation of the Assertion.
B. If both Assertion `&` Reason are True but Reason is not a correct explanation of the Assertion.
C. If Assertion is True but the Reason is False.
D. If both Assertion `&` Reason are False.

Answer

A

Explanation

The potential at centre of sphere is only due to the charged rod and hence positive. The potential at center rod and hence positive. The potential at centre of sphere due to induced charged on its surface is zero. Hence the net potential at centre is positive. the solid sphere being conducting. potential at each point in the sphere is same.