Punjab Medical Punjab - MET Solved Paper-2005

  • question_answer
    A galvanometer of resistance \[22.8\Omega \] measures\[1\,\,A\]. How much shunt should be used so that it can be used to measure\[20\,\,A\]?

    A) \[1\Omega \]                                    

    B) \[2\Omega \]

    C) \[1.2\Omega \]                

    D) \[2.2\Omega \]

    Correct Answer: C

    Solution :

    Required shunt\[S=\frac{{{I}_{g}}G}{I-{{I}_{g}}}\]                                 \[=\frac{1\times 22.8}{20-1}\]                                 \[=\frac{22.8}{19}=1.2\Omega \]


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