An electric charge $q$ is placed at the centre of a cube of side $\alpha $. The electric flux on one of its faces will be
An electric charge $q$ is placed at the centre of a cube of side $\alpha $. The electric flux on one of its faces will be
- [AIIMS 2001]
- A
$\frac{q}{{6{\varepsilon _0}}}$
- B
$\frac{q}{{{\varepsilon _0}{a^2}}}$
- C
$\frac{q}{{4\pi {\varepsilon _0}{a^2}}}$
- D
$\frac{q}{{{\varepsilon _0}}}$
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- [JEE MAIN 2022]
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A charged particle $q$ is placed at the centre $O$ of cube of length $L$ $(A\,B\,C\,D\,E\,F\,G\,H)$. Another same charge $q$ is placed at a distance $L$ from $O$.Then the electric flux through $BGFC$ is
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- [AIEEE 2002]
Assertion : Four point charges $q_1,$ $q_2$, $q_3$ and $q_4$ are as shown in figure. The flux over the shown Gaussian surface depends only on charges $q_1$ and $q_2$.
Reason : Electric field at all points on Gaussian surface depends only on charges $q_1$ and $q_2$ .
Assertion : Four point charges $q_1,$ $q_2$, $q_3$ and $q_4$ are as shown in figure. The flux over the shown Gaussian surface depends only on charges $q_1$ and $q_2$.
Reason : Electric field at all points on Gaussian surface depends only on charges $q_1$ and $q_2$ .
- [AIIMS 2012]