CMC Medical CMC-Medical Ludhiana Solved Paper-2014

  • question_answer
    In a shunted ammeter, only 10% of current passes through the galvanometer of resistance G. The resistance of the shunt is

    A)  \[9\,G\]                              

    B)  \[10\,G\]

    C)  \[\frac{G}{9}\]                                 

    D)  \[\frac{G}{10}\]

    Correct Answer: C

    Solution :

                    \[{{I}_{g}}=0.1\,\,i\] and \[{{i}_{s}}=i-0.1\,\,i\] \[=0.9\,i\] The resistance of shunt \[S=\frac{{{i}_{g}}G}{{{i}_{s}}}\]    \[=\frac{0.1\times G}{0.9}=\frac{G}{9}\]


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