| ⇦ | 
| ⇨ |
what is the electric potential at a distance of 9cm from 3nC?
Options
(a) 270V
(b) 3V
(c) 300V
(d) 30V
Correct Answer:
300V
Explanation:
Given, q = 3 nC = 3 × 10⁻⁹ C and r = 9 cm = 9 × 10⁻² m
We know that, potential due to point charge is given by V = (1 / 4πε₀) (q / r)
= (9 × 10⁹ × 3 × 10⁻⁹) / 9 × 10⁻² = 3 × 10²
⇒ Electric potential, V = 300 V
Related Questions: - A circular coil of radius 10cm and 100 turns carries a current 1 A.
- Length of a string tied to two rigid supports is 40 cm. Maximum length
- A wheel of mass 10 kg has a moment of inertia of 10 kgm² about its own axis
- Maximum range for a projectile motion is given as R. The maximum height will be
- 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
- A circular coil of radius 10cm and 100 turns carries a current 1 A.
- Length of a string tied to two rigid supports is 40 cm. Maximum length
- A wheel of mass 10 kg has a moment of inertia of 10 kgm² about its own axis
- Maximum range for a projectile motion is given as R. The maximum height will be
- 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