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(a). Use the method in part (b) of the previous problem of calculate the electrostatic self energy of a uniformly charegd sphere of radius R having charge Q. (b). Divide the above sphere (mentally) into two regions-spherical concentric part having radius (R)/(2) and the remaining annular part (between (R)/(2) and R). Denote the point charges in sphere of radius R//2 by q_(1),q_(2),q_(3) .. . .etc. The charges in annular part be denoted by Q_(1),Q_(2),Q_(3) . . . etc. Calculate the electrostatic interaction energy for all pairs like [(Q_(i),Q_(j))+(q_(i)+q_(j))]. |
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Answer» (B). `(147)/(320)(Q^(2))/(4pi epsi_(0)R)` |
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