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

  • question_answer
    Two long straight parallel wires, carrying (adjustable) current \[{{I}_{1}}\]and\[{{I}_{2}}\], are kept at a distance d apart. If the force 'F' between the two wires is taken as 'positive' when the wires repel each other and 'negative' when the wires attract each other, the graph showing the dependence of 'F' on the product\[{{I}_{1}}\,{{I}_{2}}\], would be:

    A)

    B)

    C)

    D)

    Correct Answer: A

    Solution :

    [a] \[{{I}_{1}}\,{{I}_{2}}=\] Positive (attract) F = Negative \[{{I}_{1}}\,{{I}_{2}}=\] Negative (repell) F = Positive Hence, option [a] is the correct answer.


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