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JEE Main 202311 AprilEvening Shift
Exam
JEE Main
Year
2023
Date
11 April
Shift
Evening Shift
Subject
Physics
Chapter
Capacitance

JEE Main 2023 · 11 April · Evening Shift · Physics · Capacitance

A capacitor of capacitance C is charged to a potential V . The flux...

A capacitor of capacitance CC is charged to a potential VV. The flux of the electric field through a closed surface enclosing the positive plate of the capacitor is:A capacitor of capacitance C is charged to a potential V . The flux of the electric field through a closed surface

Options

  1. ACVε0\dfrac{CV}{{ε}_{0}}
  2. BZero
  3. C2CVε0\dfrac{2CV}{{ε}_{0}}
  4. DCV2ε0\dfrac{CV}{2{ε}_{0}}

Correct answer

A. CVε0\dfrac{CV}{{ε}_{0}}

Step-by-step solution

A capacitor of capacitance C is charged to a potential V . The flux of the electric field through a closed surface
The charge enclosed is given by qinc=CV{q}_{inc} = CV

Gauss' law states that the flux through any closed surface is equal to the charge enclosed by the surface.

Using Gauss' law the flux is, ϕ=qincε0=(CVε0)ϕ = \dfrac{{q}_{\text{inc}}}{{ε}_{0}} = \left(\dfrac{CV}{{ε}_{0}}\right)

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