Assertion (A): Work done in moving a test charge between two points inside a uniformly charged spherical shell is zero, irrespective of the path. Reason (R): Electrostatic potential everywhere inside a uniformly charged spherical shell is constant and equal to its surface potential. Choose the correct answer.
Options

Question

Assertion (A): Work done in moving a test charge between two points inside a uniformly charged spherical shell is zero, irrespective of the path. Reason (R): Electrostatic potential everywhere inside a uniformly charged spherical shell is constant and equal to its surface potential. Choose the correct answer.

Options

G1 Physics · Accepted Answer

Inside a uniformly charged spherical shell, the electric field is zero. Therefore the electrostatic potential does not change from one interior point to another: ΔV = 0. Work done by the electrostatic field in moving a test charge q between two interior points is W = q(V₁ - V₂). Since V₁ = V₂, W = 0. Thus both Assertion and Reason are true, and the Reason correctly explains the Assertion. Correct option: B.