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how much work is required in turning an electric dipole of dipole moment P from its position of stable equilibrium to unstable equilibrium in a uniform electric field E |
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Answer» ⭐hey mate! For the equilibrium of dipole net force as WELL as net torque is zero. Work DONE by EXTERNAL agent in rotating the dipole from theta1 to theta2 is W = PE(cos theta1 -cos theta2) Here theta1 is at STABLE equilibrium i.e 0° And theta2 is at unstable equilibrium i.e 180° Wext = PE(COS 0° - COS180°) Wext = PE{1-(-1)} Wext = 2PE..... #phoenix |
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