| ⇦ | 
| ⇨ |
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: - A long horizontal rod has a bead which can slide long its length
- A polarised light of intensity I₀ is passed through another polariser whose pass axis
- When a piece of metal is illuminated by a monochromatic light of wavelength λ,
- Light propagates rectilinearly because of its
- Heat is not being exchanged in a body. If its internal energy is increased, then
Topics: Electrostatics
(146)
Subject: Physics
(2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- A long horizontal rod has a bead which can slide long its length
- A polarised light of intensity I₀ is passed through another polariser whose pass axis
- When a piece of metal is illuminated by a monochromatic light of wavelength λ,
- Light propagates rectilinearly because of its
- Heat is not being exchanged in a body. If its internal energy is increased, then
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