Two concentric spheres kept in air have radii R and r.

⇦

⇨

Two concentric spheres kept in air have radii R and r. They have similar charge and equal surface charge density σ. The electrical potential at their common centre is (where,ε₀=permitivity of free space)

Options

(a) σ(R+r)/ε₀
(b) σ(R-r)/ε₀
(c) σ(R+r)/2ε₀
(d) σ(R+r)/4ε₀

Correct Answer:

σ(R+r)/ε₀

Explanation:

No explanation available. Be the first to write the explanation for this question by commenting below.

Related Questions:

1. The number of photo electrons emitted for light of a frequency v
2. Number of electrons in one mC charge, given e=1.6×10⁻¹⁹ C, will be
3. A common emitter amplifier is designed with n-p-n transistor (α=0.99).
4. In Young’s double slit experiment, the intensity of light coming from the first slit
5. The kinetic energy needed to project a body of mass m from the surface of earth

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