Q. Flux coming out from a unit positive charge enclosed in air is
A) $\varepsilon_{0}$
B) $\left( \varepsilon_{0} \right)^{- 1}$
C) $\left( 4\pi\varepsilon_{0} \right)^{- 1}$
D) $4\pi\varepsilon_{0}$
Explanation
(b) Given that,
Charge $q = + 1C$
From Gauss’s law, corresponding flux
$\phi = \frac{q}{\varepsilon_{0}}$
$\therefore\ \ \ \phi = \frac{1}{\varepsilon_{0}}$
$or\ \ \ \ \ \phi = \left( \varepsilon_{0} \right)^{- 1}$
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.