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Calculate the amount of work done in turing an electric dipole of dipole moment 2 xx 10^(-8) C -m from its position of unstable eqquilibrium to its position of stable equilibrium, in a uniform electric field of 10^3 N C^(1). |
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Answer» <P> Solution :Here `p = 2 xx 10^(-8) C-m, E= 10^(3) N C^(-1)`. In unsatable equilibriumstate `theta_1 = 180^@` and for STABLE equilibrium state `theta_2= 0^@`. THEREFORE,Work done `W = pE[cos theta_1 - cos theta_2] = 2 xx 10^(-8) xx 10^3 xx [ cos 180^@ - cos 0^@] = - 4 xx 10^(-5)J` |
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