MHT CET 2024 Physics question
The electrostatic potential inside a charged spherical ball is given by where 'r' is the distance from its centre and 'a' and 'b' are constants. The volume charge density of the ball is [ = permittivity of free space]
Answer: (D)
Solution
The electric field is (radial). Apply Gauss's law to a concentric sphere of radius inside the ball with uniform volume charge density : , so . Equating, , which
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