1.

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

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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