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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 $4 \times 10^{-9} C m$ is aligned at $30^{\circ}$ with the direction of a uniform electric field of magnitude $5 \times 10^{4} NC ^{-1}$, the magnitude of the torque acting on the dipole is

KCETKCET 2022Electric Charges and Fields

Solution:

$\tau=$ P.E. $\sin \theta$