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

  • question_answer
    The relation between voltage sensitivity (\[{{\sigma }_{V}}\]) and current sensitivity \[({{\sigma }_{i}})\] of a moving coil galvanometer is (Resistance of Galvanometer = G)                                  [CPMT 2001]

    A)            \[\frac{{{\sigma }_{i}}}{G}={{\sigma }_{V}}\]             

    B)            \[\frac{{{\sigma }_{_{V}}}}{G}={{\sigma }_{i}}\]

    C)            \[\frac{G}{{{\sigma }_{V}}}={{\sigma }_{i}}\]             

    D)            \[\frac{G}{{{\sigma }_{i}}}={{\sigma }_{V}}\]

    Correct Answer: A

    Solution :

               \[{{\sigma }_{i}}=\frac{\theta }{i}=\frac{\theta }{iG}\cdot G={{\sigma }_{_{V}}}G\] Þ \[\frac{{{\sigma }_{i}}}{G}={{\sigma }_{V}}\]


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