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A charged isolated metal sphere of diame...

A charged isolated metal sphere of diameter 15cm has a potential of 6500V relative to V=0 at infinity. (a) calculate the energy density in the electric field near the surface of the sphere. (b) IF the diameter is decreased, does the energy density near the surface increase, decrease or remain the same?

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`a) 0.0333 J//m^3 `b) decreasing the diameter . Or the radius will increase u
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