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An electric dipole of dipole momentvec(p) consists of point charges + q and - q separated by a distance 2a apart. Deduce the expression for the electricfieldvec(E ) due to the dipole at a distance x from the center of dipole on its axial linein terms of the dipole moment vec(p) . Hence show that in the limit a to 0 vec(E )=(2 vec(p))/((4pi epsilon_(0)x^(3))). |
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