Question

37. The torque acting on a molecular dipole, when placed
in a uniform electric field at an angle of 30 with the
field, is 2.65 x 10-26 N m. Find the potential energy
of the dipole at equilibrium. What work is needed to
rotate it from parallel to antiparallel alignment?
Hint: t =p E sin 0, U. =-PE, W = 2 p E.
Ans.-5.3 x 10-25 J, 10.6 % 1025 J.​

Answer 1

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