| ⇦ | 
| ⇨ |
The potential of a large liquid drop when eight liquid drops are combined is 20 V. Then the potential of each single drop was
Options
(a) 10 V
(b) 7.5 V
(c) 5 V
(d) 2.5 V
Correct Answer:
5 V
Explanation:
Volume of 8 drops = Volume of bigger drop
or, [(4/3) πr³] × 8 = (4/3) πR³ or 2r = R ——(i)
Charge is conserved. 8q = Q
.·. V’ = q / capacity = q / 4πε₀r
V = Q / capacity = Q / 4πε₀R
Then , V’ / V = (q / Q) × (R / r) or, V’ / 20 = (q / 8q) × (2r / r) = 1 / 4
or, V’ = 5 volt.
Related Questions: - The kinetic energy needed to project a body of mass m from the surface of earth
- Match the following columns about collision
- Which of the following rods of same material undergoes maximum elongation
- If the focal length of objective lens is increased, then magnifying power of
- A car of mass m is moving on a level circular track of radius R
Topics: Electrostatics
(146)
Subject: Physics
(2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- The kinetic energy needed to project a body of mass m from the surface of earth
- Match the following columns about collision
- Which of the following rods of same material undergoes maximum elongation
- If the focal length of objective lens is increased, then magnifying power of
- A car of mass m is moving on a level circular track of radius R
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