JEE Main & Advanced Physics Current Electricity, Charging & Discharging Of Capacitors / वर्तमान बिजली, चार्ज और कैपेसिटर का निर JEE PYQ-Current Electricity Charging and Discharging of Capacitors

  • question_answer
    If a wire is stretched to make it 0.1% longer, its resistance will                                  [AIEEE 2011]

    A) Decrease by 0.05%

    B) Increase by 0.05%

    C) Increase by 0.2%

    D) Decrease by 0.2%

    Correct Answer: C

    Solution :

    [c] \[R\propto {{l}^{2}}\] \[\frac{\Delta R}{R}=\frac{2\Delta l}{l}\]


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