MENU

Two identical charges repel each other with a force equal to 10 mgwt they are 0.6 m

Two Identical Charges Repel Each Other With A Force Equal Physics Question

Two identical charges repel each other with a force equal to 10 mgwt they are 0.6 m apart in air. (g=10 ms⁻²). The value of each charge is

Options

(a) 2 mC
(b) 2×10⁻⁷ mC
(c) 2 nC
(d) 2 μC

Correct Answer:

2 μC

Explanation:

F = (1 / 4πε₀) (q₁q₂ / d²)
Therefore, (10 × 10⁻³) × 10 = [(9 × 10⁹) × q²] / (0.06)²
or, q² = (10⁻¹ × 0.36) / (9 × 10⁹) = 4 / 10¹² = 4 × 10⁻¹²
or, q = 2 × 10⁻⁶ C = 2 μC

Related Questions:

  1. Which of the following is a vector quantity?
  2. Point masses m₁ and m₂ are placed at the opposite ends of a rigid rod of length L,
  3. When light of wavelength 300 nm falls on a photoelectric emitter,
  4. The intensity of magnetisation of a bar magnet is 5×10⁴ Am⁻¹. The magnetic length
  5. When a spring is extended by 2 cm energy stored is 100 J. When extended further by 2 cm

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.

NEETLab Mobile App

Share this page with your friends

1 Comment on Two identical charges repel each other with a force equal to 10 mgwt they are 0.6 m

Leave a Reply

Your email address will not be published.


*