what is the electric potential at a distance of 9cm from 3nC?

⇦

⇨

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:

1. For CE transistor amplifier, the audio signal voltage across the collector resistance
2. Two nuclei have their mass numbers into the ratio of 1:3
3. The maximum wavelength of radiations emitted at 900K is 4 µm. What will be the maximum
4. Ohm’s law is not applicable except to
5. The instantaneous values of alternating current and voltages in a circuit are given as

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