Acharged isolated metal sphere of diameter 15 cm has a potential of 8500 v relative to v = 0 at infinity. calculate the energy density in the electric field near the surface of the sphere.

Explanation:

Energy density near the surface of the sphere is given by the formula

also for sphere surface we know that

R = radius of sphere

V = potential of the surface

now we have

now from the above formula we have

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