Question

# A point charge $$+q$$ is placed at mid point of a cube of side $$L$$. The electric flux emerging from the cube is

A
qε0
B
6ql2ε0
C
q6l2ε0
D
zero

Solution

## The correct option is A $$\dfrac{q}{\varepsilon _{0}}$$Gauss law: $$\oint E\cdot da=\dfrac {q_{enclosed}}{\varepsilon_0}$$Now, the total flux emerging from the cube $$=\dfrac {q}{\epsilon_0}$$ as $$q$$ is enclosed by cube.Physics

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