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 poi...

Question 1 Report

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

\(\frac{Q}{4 \pi E_o E_r r^2}\)

\(\frac{Q}{4 \pi E_o E_r(R + r)^2}\)

\(\frac{Q}{4 \pi E_o E_r(R - r)^2}\)

\(\frac{Q}{4 \pi E_o E_rR^2}\)

Electrostatics

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