⇦ | ⇨ |
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: - Colours appear on a thin soap film and soap bubbles due to the phenomenon of
- A and B are two vectors and θ is the angle between them ,if |A x B|=√3(A.B),the value of θ
- Which of the following figures represent the variation of particle momentum
- A plank with a box on it at one end is gradually raised about the other end.
- The equiconvex lens has focal length f. If it is cut perpendicular to the principal
Topics: Electrostatics
(146)
Subject: Physics
(2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- Colours appear on a thin soap film and soap bubbles due to the phenomenon of
- A and B are two vectors and θ is the angle between them ,if |A x B|=√3(A.B),the value of θ
- Which of the following figures represent the variation of particle momentum
- A plank with a box on it at one end is gradually raised about the other end.
- The equiconvex lens has focal length f. If it is cut perpendicular to the principal
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