Question 778: Electrostats & Capacitance

Question

Four charges $2 \mu \mathrm{C},-3 \mu \mathrm{C}, 4 \mu \mathrm{C},-4 \mu \mathrm{C}$ and $-1 \mu \mathrm{C}$ are enclosed by the Gaussian surface of radius 2 m . Net outward flux through the Gaussian surface is (in $\mu \mathrm{V}-\mathrm{m}$ ) [ $\varepsilon_0=$ permittivity of free space]

Accepted Answer

Electric flux $\phi=\frac{q}{\varepsilon_0}$
Net charge $\mathrm{q}=(-2-3+4-4-1) \mu \mathrm{C}=-2 \mu \mathrm{C}$
$$ 	herefore \quad \phi=-\frac{-6}{\varepsilon_0} \mu \mathrm{~V}-\mathrm{m} $$

Answer

$\frac{2}{\varepsilon_0}$

Answer

zero

Answer

$\frac{3}{\varepsilon_0}$

Answer

$\frac{5}{\varepsilon_0}$

Electrostats & Capacitance

Four charges 2 \mu \mathrm{C},-3 \mu \mathrm{C}, 4 \mu \mathrm{C},-4 \mu \mathrm{C} and -1 \mu \mathrm{C} are enclosed by the Gaussian surface of radius 2 m . Net outward flux through the Gaussian surface is (in \mu \mathrm{V}-\mathrm{m} ) [ \varepsilon_0= permittivity of free space]

Choose the correct answer: