| ⇦ | 
| ⇨ |
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: - Frequency of stretched string will increase by
- A planar coil having 12 turns carries 15 A current. The coil is oriented with respect
- In a common emitter (CE) amplifier having a voltage gain G, the transistor
- A transformer rated at 10 kW is used to connect a 5 kV transmission line to a 240 V
- In an LCR series A.C circuit, the voltage across each of the components, L, C and R is 50V
Topics: Electrostatics
(146)
Subject: Physics
(2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- Frequency of stretched string will increase by
- A planar coil having 12 turns carries 15 A current. The coil is oriented with respect
- In a common emitter (CE) amplifier having a voltage gain G, the transistor
- A transformer rated at 10 kW is used to connect a 5 kV transmission line to a 240 V
- In an LCR series A.C circuit, the voltage across each of the components, L, C and R is 50V
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