| ⇦ | 
| ⇨ |
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: - Four blocks of same mass connected by cords are pulled by a force F
- A heavy small sized sphere is suspended by a string of length l.The sphere rotates
- Water rises to a height h in capillary tube. If the length of capillary tube above
- The mean radius of the earth is R, its angular speed on its own axis is ?
- The nuclei of which one of the following pairs of nuclei are isotones?
Topics: Electrostatics
(146)
Subject: Physics
(2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- Four blocks of same mass connected by cords are pulled by a force F
- A heavy small sized sphere is suspended by a string of length l.The sphere rotates
- Water rises to a height h in capillary tube. If the length of capillary tube above
- The mean radius of the earth is R, its angular speed on its own axis is ?
- The nuclei of which one of the following pairs of nuclei are isotones?
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