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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
(146)
Subject: Physics
(2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- The minimum velocity (in ms⁻¹) with which a car driver must traverse a flat curve
- The particle executing simple harmonic motion has a kinetic energy K₀cos²ωt.
- A siren emitting sound of frequency 800 Hz is going away from a static listener
- The horizontal range of a projectile is 4√3 times the maximum height achieved
- Water drops fall from a top on the floor 5 m below at regular intervals
Topics: Electrostatics (146)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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