12th Class Physics Electric Charges and Fields Question Bank MCQ - Electric Charges and Fields

  • question_answer
    The total flux through the faces of the cube with side of length a, if a charge q is placed at corner A of the cube is:

    A) \[\frac{q}{8{{\varepsilon }_{0}}}\]                    

    B) \[\frac{q}{4{{\varepsilon }_{0}}}\]

    C) \[\frac{q}{2{{\varepsilon }_{0}}}\]                                

    D) \[\frac{q}{{{\varepsilon }_{0}}}\]

    Correct Answer: A

    Solution :

    \[\frac{q}{8{{\varepsilon }_{0}}}\] In the figure, when a charge q is placed at corner A of the cube, it is being shared equally by 8 cubes. \[\therefore \]The total flux through the faces of the given cube \[=\frac{q}{8{{\varepsilon }_{0}}}\]


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