CET Karnataka Engineering CET - Karnataka Engineering Solved Paper-2000

  • question_answer
    A cube of side b has a charge q at each of its vertices. The electric field at the centre of the cube is:

    A)  \[\frac{2q}{{{b}^{2}}}\]                                

    B) \[\frac{q}{2{{b}^{2}}}\]

    C)  zero                                     

    D)  \[\frac{q}{{{b}^{2}}}\]

    Correct Answer: C

    Solution :

     The electric field at the centre of the cube due to charges at its vertices is zero.


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