Question

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.
A. Statement-1 is true, Statement-2: is true, Statement-2 is a correct explanation for Statement-1.
B. Statement-1 is true, Statement-2: is true, Statement-2 is NOT a correct explanation for Statement-1.
C. Statement-1 is true but statement-2 is false
D. Statement-1 is false, Statement-2 is true

Answer 1

Correct Answer - A
The potential at centre of sphere is only due to charged rod and hence positive. The potential at centre of sphere due to induced 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. hence statement-1 is true, statement-2 is true, statement -2 is a correct explanation for statement-1