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MHT CET Physics question

PhysicsElectric Charges and FieldsMHT CET

A conducting sphere of radius 0.1 m has a uniform positive charge density of 1.8 on its surface. The electric field in V/m in free space at a radial distance of 0.2 m from a point on the surface of the sphere is given by

Answer: (B)

Solution

The point is at m from the centre, so \dfrac{σ R^2}{ε_0 r^2}$ =

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Question ID VK-075219