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NEET Sample Paper NEET Sample Test Paper-41

  • question_answer
    A steady current is set up in a metallic wire of non - uniform cross section how is the rate of flow of free electrons related to the 8. A body starts from rest and moves with uniform acceleration. Which of the following graphs represent its motion:

    A) \[\operatorname{K}\propto \,{{\operatorname{A}}^{o}}\]                       

    B) \[\operatorname{K}\propto \,{{\operatorname{A}}^{-1}}\]

    C) \[\operatorname{K}\propto \,\operatorname{A}\]              

    D) \[\operatorname{K}\propto \,{{\operatorname{A}}^{2}}\]

    Correct Answer: A

    Solution :

    The current is the same for all cross section of a conductor of non-uniform cross section. Charge flows faster where the conductor is smaller in cross-section and slower where the conductor is larger in cross section, so that charge rate remains uncharged


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