12th Class Physics Electric Charges and Fields Question Bank Case Based (MCQs) - Electric Charges and Fields

  • question_answer
    A point charge of 2 C is placed at centre of Faraday cage in the shape of cube with surface of 9 cm edge. The number of electric field lines passing through the cube normally will be:

    A) \[1.9\times {{10}^{5}}\,N{{m}^{2}}/C\]entering the surface

    B) \[1.9\times {{10}^{5}}\,N{{m}^{2}}/C\] leaving the surface

    C) \[~2.0\text{ }\times \text{ }{{10}^{5}}\text{ }N{{m}^{2}}/C\] leaving the surface

    D) \[2.0\text{ }\times \text{ }{{10}^{5}}\text{ }N{{m}^{2}}/C\]entering the surface

    Correct Answer: B

    Solution :

    (b) \[1.9\times {{10}^{5}}\,N{{m}^{2}}/C\] leaving the surface


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