A point charge causes an electric flux of $-1.0 imes 10^3 ext{ N m}^2 ext{/C}$ to pass through a

Question

A point charge causes an electric flux of $-1.0 	imes 10^3	ext{ N m}^2	ext{/C}$ to pass through a spherical Gaussian surface. What is the value of the point charge?

Professor PC Thomas Classes · Answer

Using Gauss's law, $Q = \epsilon_0 \Phi = 8.854 	imes 10^{-12} 	imes (-1.0 	imes 10^3) = -8.854 	imes 10^{-9}	ext{ C} \approx -8.8	ext{ nC}$.