AP EAMCET · PHYSICS · Electrostatics
Two electric dipoles, each of dipole moment ' \(P\) ' are placed at points \(A(a, 0)\) and \(B(-a, 0)\) as shown in the figure. The work done in rotating both the dipoles through \(90^{\circ}\) in clockwise direction is
\((E=\text { Electric field })\)
- A PE
- B Zero
- C \(2 \mathrm{PE}\)
- D \(\frac{P E}{2}\)
Answer & Solution
Correct Answer
(A) PE
Step-by-step Solution
Detailed explanation
Work done due to dipole, \(\mathrm{W}=-\mathrm{p} E \cos \theta\) Here \(\mathrm{W}=\mathrm{W}_{90}-\mathrm{W}_0\) \(=(-\mathrm{PE} \cos 90)-(-\mathrm{pE} \cos 0)=\mathrm{PE}\)
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