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VMMC VMMC Medical Solved Paper-2012

  • question_answer
    A galvanometer has a coil of resistance m \[100\,\Omega \] and gives a full scale deflection for 30 mA current. If it is to work as a voltmeter of 30 V range, the resistance required to be added will be

    A)  \[900\,\Omega \]

    B)  \[1800\,\Omega \]

    C)  \[500\,\Omega \]

    D)  \[100\,\Omega \]

    Correct Answer: A

    Solution :

     Required resistance \[R=\frac{V}{{{i}_{g}}}-G\] \[=\frac{30}{30\times {{10}^{-3}}}-100=900\,\Omega \]


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