JEE Main & Advanced Physics Magnetic Effects of Current / करंट का चुंबकीय प्रभाव Question Bank Graphical Questions

  • question_answer
    Which of the following graphs shows the variation of magnetic induction B with distance r from a long wire carrying current  [NCERT 1984; MNR 1998; MP PMT 1999]

    A)                                       

    B)  

    C)                                        

    D)                                

    Correct Answer: C

    Solution :

               \[|\overrightarrow{B}|=\frac{{{\mu }_{0}}}{4\pi }.\frac{2\pi \,i}{r}\Rightarrow \ |\overrightarrow{B}|\propto \frac{1}{r}\]


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