| ⇦ | 
| ⇨ |
An electric dipole of moment p is lying along a uniform electric field E. The work done in rotating the dipole by 90° is
Options
(a) pE
(b) √2 pE
(c) pE / 2
(d) 2pE
Correct Answer:
pE
Explanation:
No explanation available. Be the first to write the explanation for this question by commenting below.
Related Questions:
- If doubly ionised lithium atom is hydrogen like with atomic number 3, the wavelength
- If the angular momentum of any rotating body increase by 200 % , then the increase
- Young’s modulus of the material of a wire is 18×10¹¹ dyne cm⁻².its value in SI is
- Shearing stress causes change in
- Light of wavelength 500 nm is incident on a metal with work function 2.28 eV.
Topics: Electrostatics
(146)
Subject: Physics
(2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
18000+ students are using NEETLab to improve their score. What about you?
Solve Previous Year MCQs, Mock Tests, Topicwise Practice Tests, Identify Weak Topics, Formula Flash cards and much more is available in NEETLab Android App to improve your NEET score.
Share this page with your friends
As Work done =∆U
∆pE=U(final) -U(intial)
As U=-PECOSθ
Ui=-PECOS0°=-PE
Uf=-pECOS90°=0 As cos90=0
So workdone =Uf -Ui
Workdone=0-(-PE)
Workdone=PE