| ⇦ | 
| ⇨ |
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 car moves from X to Y with a uniform speed v(u) and returns to Y with a uniform speed
- The induced emf in a coil of 10 H inductance in which current varies
- A man throws balls with the same speed vertically upwards one after the other
- A man of 50 kg mass is standing in a gravity free space at a height
- Which is correct relation?
Topics: Electrostatics
(146)
Subject: Physics
(2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- A car moves from X to Y with a uniform speed v(u) and returns to Y with a uniform speed
- The induced emf in a coil of 10 H inductance in which current varies
- A man throws balls with the same speed vertically upwards one after the other
- A man of 50 kg mass is standing in a gravity free space at a height
- Which is correct relation?
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