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Find theinteraction forceof two coilswith magnetic momentp_(1m) = 43.0 mA.m^(2) and p_(2m) = 6.0 mA.m^(2) and coilnear axis if the separationbetweenthe coilsis equalto l = 20 cm which exceedsconsiderably theirlinear dimensions. |
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Answer» Solution :`P = P_(2m) (DEL)/(del t) [(mu_(0))/(4PI) (3 vec(p_(1M)) . vec(r) vec(r) - vec(p_(1m)) r^(2))/(r^(2))]` `P_(2m) (del)/(del l) [(mu_(0))/(2pi) (P_(1m))/(l^(3))] = (-3)/(2) (mu_(0) P_(1m) p_(2m))/(pi l^(4)) = 9 nN` |
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