COMEDK · Physics · 17. Electrostatics
An electric dipole is placed at an angle of \(60^{\circ}\) with an electric field intensity \(10^4 \mathrm{~N} / \mathrm{C}\). If experiences a torque equal to \(4 \sqrt{3} \mathrm{~N}-\mathrm{m}\). The charge on the dipole, if the dipole length is 1 cm , is
- A 60 mC
- B 80 mC
- C 20 mC
- D 10 mC
Answer & Solution
Correct Answer
(B) 80 mC
Step-by-step Solution
Detailed explanation
Given, \(E=10^4 \mathrm{~N} / \mathrm{C}, \tau=4 \sqrt{3} \mathrm{~N}-\mathrm{m}, \theta=60^{\circ}\) Dipole length, \(2 l=1 \mathrm{~cm}=10^{-2} \mathrm{~m}\) We know that, torque on dipole,…
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