| ⇦ | 
| ⇨ |
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: - Which of the following will be σ if Y=2.4 η?
- A tuning fork gives 4 beats with 50 cm length of a sonometer
- The ionization energy of Li⁺⁺ is equal to
- Find the maximum velocity with which a train can be moved on a circular track
- A bar magnet of moment of inertia I is vibrated in a magnetic field of induction
Topics: Electrostatics
(146)
Subject: Physics
(2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- Which of the following will be σ if Y=2.4 η?
- A tuning fork gives 4 beats with 50 cm length of a sonometer
- The ionization energy of Li⁺⁺ is equal to
- Find the maximum velocity with which a train can be moved on a circular track
- A bar magnet of moment of inertia I is vibrated in a magnetic field of induction
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