JEE Main & Advanced Physics Current Electricity, Charging & Discharging Of Capacitors Question Bank Heating Effect of Current

  • question_answer The maximum current that flows through a fuse wire before it blows out varies with its radius as              [SCRA 1998]

    A)            \[{{r}^{3/2}}\]                      

    B)            r

    C)            \[{{r}^{2/3}}\]                      

    D)            \[{{r}^{1/2}}\]

    Correct Answer: A

    Solution :

               It is called safe current and is proportional to \[{{r}^{3/2}}\].

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