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A point charge of $2.0 \mu \mathrm{C}$ is at the centre of a cubic Gaussian surface $9.0 \mathrm{~cm}$ on edge. What is the net electric flux through the surface?
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Given, $\mathrm{q}=2 \mu \mathrm{C}=2 \times 10^{-6} \mathrm{C}$,
$\varepsilon_0=8.854 \times 10^{-12} \mathrm{C}^2 \mathrm{~N}^{-1} \mathrm{~m}^{-1}$ (taken), $\phi=$ ?
By Gauss's law $\quad \phi=\mathrm{q} / \varepsilon_0$
$=\left(2 \times 10^{-6}\right) /\left(8.854 \times 10^{-12}\right)$
$=2.26 \times 10^5 \mathrm{Nm}^2 / \mathrm{C}^{-1}$
$\varepsilon_0=8.854 \times 10^{-12} \mathrm{C}^2 \mathrm{~N}^{-1} \mathrm{~m}^{-1}$ (taken), $\phi=$ ?
By Gauss's law $\quad \phi=\mathrm{q} / \varepsilon_0$
$=\left(2 \times 10^{-6}\right) /\left(8.854 \times 10^{-12}\right)$
$=2.26 \times 10^5 \mathrm{Nm}^2 / \mathrm{C}^{-1}$
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