| ⇦ | 
| ⇨ |
The electric potential at a point in free space due to a charge Q coulomb is Q x 10¹¹ volts. The electric field at that point is
Options
(a) 4π?￢ﾂﾀQ x 10²² volt/m
(b) 12π?￢ﾂﾀQ x 10²⁰ volt/m
(c) 4π?￢ﾂﾀQ x 10²⁰ volt/m
(d) 12π?￢ﾂﾀQ x 10²² volt/m
Correct Answer:
4π?￢ﾂﾀQ x 10²² volt/m
Explanation:
Given that V = Q x 10¹¹ volts Electric potential at point is given by
V = 1 / 4π?￢ﾂﾀ . Q/r or,
Q x 10¹¹ = 1 / 4π?￢ﾂﾀ . Q/r
r = 1 / 4π?￢ﾂﾀ.10⁻¹¹ m.
As |E| = |V| / r = Q x 10¹¹ / (1 / 4π?￢ﾂﾀ.10⁻¹¹)
= 4π?￢ﾂﾀQ x 10²² volt/m
Related Questions: - An ideal spring with spring constant K is hung from the ceiling and a block of mass
- A beaker of radius 1.5 cm is filled with a liquid of surface tension 0.075 N/m
- A photoelectric surface is illuminated successively by monochromatic light of wavelength
- A motor-cyclist drives a motor cycle in a vertical circle. His minimum velocity
- In a region, the potential is represented by V(x,y,z)=6x-8xy-8y+6yz, where V
Topics: Electrostatics
(146)
Subject: Physics
(2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- An ideal spring with spring constant K is hung from the ceiling and a block of mass
- A beaker of radius 1.5 cm is filled with a liquid of surface tension 0.075 N/m
- A photoelectric surface is illuminated successively by monochromatic light of wavelength
- A motor-cyclist drives a motor cycle in a vertical circle. His minimum velocity
- In a region, the potential is represented by V(x,y,z)=6x-8xy-8y+6yz, where V
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