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MHT CET Physics question

PhysicsElectric Charges and FieldsMHT CET

A spherical conductor of radius 2 cm is uniformly charged with 3 nC. What is the electric field at a distance of 3 cm from the centre of the sphere?

Answer: (C)

Solution

Outside the sphere \dfrac{kq}{r^2}\dfrac{9×10^9×3×10^{-9}}{(3×10^{-2})^2}$=3\

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Question ID VK-075719