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AMU Medical AMU Solved Paper-2005

  • question_answer
    If reduction factor of a tangent galvanometer is 900 mA, then the current through it to produce a deflection of \[45{}^\circ \] is

    A)  600 mA                               

    B)  700 mA

    C)   750 mA                              

    D)  900 mA

    Correct Answer: D

    Solution :

                     Current (I) flowing in a tangent galvanometer is given by                 \[I=k\,\tan \theta \]. Given, k is reduction factor \[\therefore \]  \[I=900\times {{10}^{-3}}\times \tan \,{{45}^{o}}\] \[\Rightarrow \]               \[I=900\,\,mA\]


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