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If a point charge is placed is front of a grounded conducting sphere the induced...

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Physics

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If a point charge is placed is front of a grounded conducting sphere the induced charges on the surface of the sphere is non uniform To calculate the force on Q due to this sphere or electric field at any point on surface of sphere or outside it an image charge must be kept on the line joining centre of sphere and Q To find this image charge and its position we make the potential due to Q and image charge together on any two points on the surface of sphere equal to ZERO Once these value are obtained force on conductor due to Q will be equal to force between image charge and Q Also field at any point on the sphere or outside will be equal to net field due to Q and image charge Now answer the following questions 9 Force between the sphere and Q is equal to Q Rd 4 Eo d R 2Q Rd A C En 2R d R B P Q Rd 4 Eo 2R d 2 Q Rd 4 R 20 D Image charge d 4

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