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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
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Topics: Electrostatics
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Subject: Physics
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Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- Two bodies of masses m₁ and m₂ are initially at rest at infinite distance apart
- The horizontal range and maximum height attained by a projectile are R and H,respectively
- An electron moves on a straight line path XY as shown. The abcd is a coil adjacent
- A condenser of 250 μF is connected in parallel to a coil of inductance of 0.16 mH
- The time period of bar magnet is doubled when magnetic field is reduced
Topics: Electrostatics (146)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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