An electric dipole with dipole moment 5 10⁻⁶ Cm is aligned with the direction of a uniform electric field of magnitude 4 10^5 ~N / C The dipole is then rotated through an angle of 60^ with respect to the electric field. The change in the po

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An electric dipole with dipole moment 5 10⁻⁶ Cm is aligned with the direction of a uniform electric field of magnitude 4 10^5 ~N / C The dipole is then rotated through an angle of 60^ with respect to the electric field. The change in the potential energy of the dipole is:

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Correct answer: B. 1.0 J

Given, aligned & p =5 10⁻⁶ Cm & E =4 10^5 ~N / C & _ i =0^ , _ f =60^ & U = U _ f - U _ i & =- pE _ f - (- pE _ i ) & pE ( _ i - _ f ) & 5 10⁻⁶ 4 10^5 (1- 1 2 )=1 ~J aligned

An electric dipole with dipole moment 5 10⁻⁶ Cm is aligned with the direction of a uniform electric field of magnitude 4 10^5 ~N / C The dipole is then rotated through an angle of 60^ with respect to the electric field. The change in the potential energy of the dipole is:

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