A conducting sphere of radius R is given a charge Q. The electric potential and the electric field at the centre of the sphere respectively are

NEET 2014 Physics question

A conducting sphere of radius is given a charge . The electric potential and the electric field at the centre of the sphere respectively are

(1)Zero and
(2) and zeroCorrect
(3) and
(4)Both are zero

Answer: (2)

Solution

For a charged conducting sphere, the charge resides on the surface. Inside a conductor in electrostatic equilibrium the electric field is zero, so at the centre. With zero field inside, the potential is constant everywhere inside

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Question ID VK-091498