Physics Circle home Student Login

Home›Chapters›Electrostatics PYQs›Electric Flux & Gauss's Law›Question 56

NEET 2023 · Electric Flux & Gauss's Law

Electric Flux & Gauss's Law question from NEET 2023

Q56NEET 2023Easy

Electric Flux & Gauss's Law

A charge Q μCQ\ \mu\text{C} is placed at the centre of a cube. The flux coming out from any one of its faces will be (in SI unit):

Show answer and solution

Answer: (d)

  1. Total flux from the charge =qε0= \dfrac{q}{\varepsilon_0}; by symmetry each of the 6 faces gets 16\dfrac{1}{6} of it.
  2. q=Q μC=Q×10−6 Cq = Q\ \mu\text{C} = Q \times 10^{-6}\ \text{C}
  3. ϕface=Q6ϵ0×10−6\phi_{face} = \dfrac{Q}{6\epsilon_0} \times 10^{-6}
  4. So the answer is (d).
Report a mistake

More questions on Electric Flux & Gauss's Law