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Small drops of the same size are charges to V volt each. If n such drops coalesce to form a single large drop, its potential will be
Options
(a) Vn
(b) V/n
(c) Vn¹/³
(d) Vn²/³
Correct Answer:
Vn²/³
Explanation:
Potential at the surface of a solid charged sphere = (1 /4πε₀).(q / a)
(4/3) πr³ × n = (4/3) πr’³
Due to n changes, Vn = (1 /4πε₀).(nq / r’),
r’ = rn¹/³
Vn = (1 /4πε₀).(nq / n¹/³ r) = V n²/³
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Topics: Electrostatics
(146)
Subject: Physics
(2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- A bar magnet of pole strength 10 A-m is cut into two equal parts breadthwise.
- The earth is assumed to be a sphere of radius R. A platform is arranged at a height R
- Aperture of human eye is 0.2 cm. The minimum magnifying power of a visual
- A stone of mass 1 kg tied to a light inexensible string of length L=10/3 is whirling
- What is the wavelength of light for the least energetic photon emitted
Topics: Electrostatics (146)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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