JEE Main & Advanced Physics Magnetic Effects of Current / करंट का चुंबकीय प्रभाव Question Bank Force and Torque on a Current Carrying Conductor

  • question_answer
    Two galvanometers A and B require 3mA and 5mA respectively to produce the same deflection of 10 divisions. Then                                                                        [Kerala PET 2001]

    A)            A is more sensitive than B

    B)            B is more sensitive than A

    C)            A and B are equally sensitive

    D)            Sensitiveness of B is 5/3 times that of A

    Correct Answer: A

    Solution :

               Sensitivity (S) =\[\frac{\theta }{i}\] Þ \[\frac{{{S}_{A}}}{{{S}_{B}}}=\frac{{{i}_{B}}}{{{i}_{A}}}=\frac{5}{3}\Rightarrow {{S}_{A}}>{{S}_{B}}\]


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