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    Calculation of force on a small charge element

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    An electric charge Q is uniformly distributed over the surface of a sphere of radius r.Show that the force on a small charge element dq is radial and outward and is given by
    dF=1/2 Edq,
    where, E=1/(4 Pi Epsilon_0)(Q/r^2) is the electric field at the surface of the sphere.

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    Solution Summary

    Calculation of force on a small charge element on the sphere having a uniform distribution of electric charge. In answer a figure is also provided.