| ⇦ | 
| ⇨ |
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 body is thrown vertically up with a velocity u.It passes three points A,B and C
- Pure Si at 500 K has equal number of electron (nₑ) and hole (nₕ) concentrations
- A compass needle which is allowed to move in a horizontal plane
- A 6 volt battery is connected to the terminals of a three metre long wire of uniform
- A concave mirror of focal length f₁ is placed at a distance d from a convex lens
Topics: Electrostatics
(146)
Subject: Physics
(2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- A body is thrown vertically up with a velocity u.It passes three points A,B and C
- Pure Si at 500 K has equal number of electron (nₑ) and hole (nₕ) concentrations
- A compass needle which is allowed to move in a horizontal plane
- A 6 volt battery is connected to the terminals of a three metre long wire of uniform
- A concave mirror of focal length f₁ is placed at a distance d from a convex lens
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