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An isolated metal sphere of radius R, carrying an electric charge Q, is situated in the ...

An isolated metal sphere of radius R, carrying an electric charge Q, is situated in the medium of relative permitivity, Er. A test charge is placed at a point p, distance r from the surface of the sphere. Let Eo represent the permitivity of free space. The magnitude of the electric field intensity at P is given by the expression

A. \(\frac{Q}{4 \pi E_o E_r r^2}\)
B. \(\frac{Q}{4 \pi E_o E_r(R + r)^2}\)
C. \(\frac{Q}{4 \pi E_o E_r(R - r)^2}\)
D. \(\frac{Q}{4 \pi E_o E_rR^2}\)




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