12th Class Physics Electric Charges and Fields Question Bank Assertion And Reason (MCQs) - Electric Charges and Fields

  • question_answer
     
    ASSERTION: Gauss's law can't be used to calculate electric field near an electric dipole.
    REASON: Electric dipoles don't have symmetrical charge distribution.

    A) If both assertion and reason are true and reason is the correct explanation of assertion.

    B) If both assertion and reason are true and reason is not the correct explanation of assertion.

    C) If assertion is true but reason is false.

    D) If both assertion and reason are false.

    E) If assertion is false but reason is true.

    Correct Answer: A

    Solution :

    Gauss's law is applicable for any closed surface. Gauss's law is most useful in situation where the charge distribution has spherical or cylindrical symmetry or is distributed uniformly over the plane. Whereas electric dipole is a system of two equal and opposite point charges separated by a very small and finite distance.


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