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  4. An electric dipole with dipole moment 4 × 10-9 C m is aligned at 30° with the direction of a uniform electric field of magnitude 5 × 104 NC -1, the magnitude of the torque acting on the dipole is

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Q. An electric dipole with dipole moment 4×10−9Cm is aligned at 30∘ with the direction of a uniform electric field of magnitude 5×104NC−1, the magnitude of the torque acting on the dipole is

KCETKCET 2022Electric Charges and Fields

Solution:

τ= P.E. sinθ