A point charge q is placed at a distance...

A point charge `q` is placed at a distance `a//2` directly above the centre of a square of side `a`. The electric flux through the square is

`q//epsi_(0)`

`q//2epsi_(0)`

`q/(4 epsi_(0))`

`q//epsi_(0)`

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A point charge q is placed at a distance (a)/(2) directly above the centre of a horizontal square of side 'a' and another point charge -q is placed at a distance 'a' directly below one of its (the square's) corners. The electric flux through the square is :

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