A charge of 4×10−9C is uniformly distributed over the surface of ring shape conductor of radius 0.3m . Calculate the intensity of electric field at a point on the axis of the ring at a distance of 0.4m from the plane of the conductor ____ V/m

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answer is 0115.20.

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Detailed Solution

ER=K.qrR2+r232 =9×109×4×10−9×0.40.32+0.4232 =115.2 Vm

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