JEE Main & Advanced Physics Current Electricity, Charging & Discharging Of Capacitors / वर्तमान बिजली, चार्ज और कैपेसिटर का निर Question Bank Different Measuring Instruments

  • question_answer
    A voltmeter has resistance of 2000 ohms and it can measure upto 2V. If we want to increase its range to 10 V, then the required resistance in series will be                                                                           [CPMT 1997, SCRA 1994]

    A)                    \[2000\,\Omega \]

    B)                                      \[4000\,\Omega \]

    C)                    \[6000\,\Omega \]     

    D)            \[8000\,\Omega \]

    Correct Answer: D

    Solution :

                 Here \[n=\frac{10}{2}=5\]            \ \[R=(n-1)G\]\[=(5-1)2000=8000\,\Omega \]


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