JEE Main & Advanced Physics Magnetic Effects of Current / करंट का चुंबकीय प्रभाव Question Bank Self Evaluation Test - Moving Charges and Mangetism

  • question_answer
    The figure shows two long straight current carrying wire separated by a fixed distance d. The magnitude of current, flowing in each wire varies with time but the magnitude of current in each wire is equal at all times. Which of the following graphs shows the correct variation of force per unit length/between the two wires with current?      

    A)

    B)

    C)

    D)

    Correct Answer: C

    Solution :

    [c] The force per unit length is given by  \[f=\frac{{{\mu }_{0}}{{i}^{2}}}{2\pi d}\] i.e., \[f\propto {{i}^{2}}\]


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