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Question: Answered & Verified by Expert
An electric dipole consisting of two opposite charges of $2 \times 10^{-6} \mathrm{C}$ each separated by a distance of $3 \mathrm{~cm}$ is placed in an electric field of $2 \times 10^5 \mathrm{~N} / \mathrm{C}$. The maximum torque on the dipole will be
PhysicsElectrostaticsJEE Main
Options:
  • A $12 \times 10^{-1} \mathrm{Nm}$
  • B $12 \times 10^{-3} \mathrm{Nm}$
  • C $24 \times 10^{-1} \mathrm{Nm}$
  • D $24 \times 10^{-3} \mathrm{~N} \mathrm{~m}$
Solution:
1660 Upvotes Verified Answer
The correct answer is: $12 \times 10^{-3} \mathrm{Nm}$
Maximum torque $=p E$
$=2 \times 10^{-6} \times 3 \times 10^{-2} \times 2 \times 10^5=12 \times 10^{-3}$ $N-m$.

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