JEE Main & Advanced Physics Current Electricity, Charging & Discharging Of Capacitors / वर्तमान बिजली, चार्ज और कैपेसिटर का निर Question Bank Self Evaluation Test - Current Electricity

  • question_answer
    Suppose the drift velocity \[{{v}_{d}}\]in a material varied with the applied electric field E as \[{{v}_{d}}\propto \sqrt{E}.\] Then V-I graph for a wire made of such a material is best given by:

    A)

    B)

    C)

    D)

    Correct Answer: C

    Solution :

    [c] \[i=neA{{V}_{d}}\]and \[{{V}_{d}}\propto \sqrt{E}\] (Given) or \[{{i}^{2}}\propto \sqrt{E}\] \[{{i}^{2}}\propto E\text{       }{{i}^{2}}\propto V\] Hence graph [c] correctly depicts the V-I graph for a wire made of such type of material.


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