VMMC VMMC Medical Solved Paper-2011

  • question_answer
    A voltmeter of resistance 2000 \[\Omega \], 0.5 V/div is to be converted into a voltmeter to make it to read2V/div. The value of high resistance to be connected in series with it is

    A)  6000\[\Omega \]            

    B)                         4000 \[\Omega \]           

    C)  5000\[\Omega \]                            

    D)  1000 \[\Omega \]

    Correct Answer: A

    Solution :

                            Here, \[V=\text{ }2V/div,\text{ }{{V}_{g}}=\text{ 0}.5V/div,\text{ }G=2000\text{ }\Omega \] Using the relation \[V=n{{V}_{g}}\] \[\Rightarrow \]                               \[2=n\times 0.5\] \[\Rightarrow \]                               \[n=4\] Now, the high resistance is to be connected in series. It is given by R = G (n -1) = 2000 (4 -1) \[=6000\,\Omega \]


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