| ⇦ | 
| ⇨ |
An electric dipole of dipole moment p is aligned parallel to a uniform electric field E. The energy required to rotate the dipole by 90⁰ is
Options
(a) p E²
(b) p² E
(c) p E
(d) infinity
Correct Answer:
p E
Explanation:
When electric dipole is aligned parallel θ = 0⁰ and the dipole is rotated by 90⁰ i.e., θ = 90⁰
Energy required to rotate the dipole W = Uⱼ – Uᵢ = (- pE cos 90⁰) – ( – pE cos 0⁰) = p E
Related Questions: - A force F=ai+3j+6k is acting at a point r=2i-6j-12k. The value of α for
- If the kinetic energy of the particle is increased to 16 times its previous value
- If force(F), Velocity(V) and time(T) are taken as fundamental units, then the dimensions
- When 4 A current flows for 2 min in an electroplating experiment,
- A bus is moving with a velocity of 5 ms⁻¹ towards a huge wall.
Topics: Electrostatics
(146)
Subject: Physics
(2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- A force F=ai+3j+6k is acting at a point r=2i-6j-12k. The value of α for
- If the kinetic energy of the particle is increased to 16 times its previous value
- If force(F), Velocity(V) and time(T) are taken as fundamental units, then the dimensions
- When 4 A current flows for 2 min in an electroplating experiment,
- A bus is moving with a velocity of 5 ms⁻¹ towards a huge wall.
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
Leave a Reply