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JEE Main 2003 Physics question

PhysicsElectrostatic Potential and CapacitanceJEE Main 2003

A thin spherical conducting shell of radius R has a charge q. Another charge Q is placed at the centre of the shell. The electrostatic potential at a point P a distance from the centre of the shell is

Answer: (3)

Solution

By superposition: the point charge Q gives ; the shell's charge q gives, at any interior point, the same potential as at its surface,

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Question ID VK-038101