Question

The electric flux for Gaussian surface A that enclose the charged particles in free space is
(given $q_1= - 14\, nc, q_2 = 78.85\, nC, q_3 = - 56\, nC$)

• A. $10^3\,Nm^2C^{-1} $
• B. $10^3\,CN^{-1}m^{-2} $
• C. $6.32 \times 10^3\,Nm^2C^{-1}$
• D. $6.32 \times 10^3\,CN^{-1}m^{-2} $

Answer 1

Answer: (A)

Electric flux $=\frac{q}{\varepsilon_{0}}$
$=\frac{(-14+7885-56) \times 10^{-9}}{885 \times 10^{-12}}=\frac{885 \times 10^{-9}}{885 \times 10^{-12}}$
$=1000\, Nm ^{2} \,C ^{-1}$