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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
- A car moves from X to Y with a uniform speed v(u) and returns to Y with a uniform speed
- Two bodies of mass 1 kg and 3 kg have positive vectors i + 2j + k and -3i -2j + k
- The work function of sodium is 2.3 eV. The threshold wavelength of sodium will be
- When three identical bulbs of 60 W-200 V rating are connected in series to a 200 V
- A car moving with a velocity of 36 km/hr crosses a siren of frequency 500 Hz.
Topics: Electrostatics (146)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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