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If a point charge q is placed at one cor...

If a point charge q is placed at one corner of a cube, what is the flux linked with the cube?

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In this case by placing three cubes at three sides of given cube and four cubes above, the charge will be in the centre.
So, the fulx linked with each cube will be one-eight of the flux `q/epsilon_(0)`.
`:.` Flux associated with given cube`=q/(8 epsilon_(0))`
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Knowledge Check

  • If a charge q is placed at centre of cube, then flux associated with each edge is .......

    A
    `q/epsilon_(0)`
    B
    `q/(8epsilon_(0))`
    C
    `q/(12epsilon_(0))`
    D
    `q/(2epsilon_(0))`

  • A point charge q is placed at the centre of a cube of side length L . The electric flux emerging from the cube is……

    A
    `q/e_0`
    B
    zero
    C
    `(6ql)^2/e_0`
    D
    `q/(6L^2 e_0)`

  • When a 10muC charge is enclosed by a closed surface, the flux passing through the surface is phi . Now another 10muC charge is placed inside the closed surface, then the flux passing through the surface is ………..

    A
    `4phi`
    B
    `phi`
    C
    `2phi`
    D
    zero

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