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 galvanometer of resistance \[25\,\Omega \] gives full scale deflection for a current of 10 milliampere, is to be changed into a voltmeter of range 100 V by connecting a resistance of ?R? in series with galvanometer. The value of resistance R in \[\Omega \] is                         [MP PET 1994]

    A)                    10000                               

    B)            10025

    C)                    975                                   

    D)            9975

    Correct Answer: D

    Solution :

                 \[R=\frac{V}{{{i}_{g}}}-G=\frac{100}{10\times {{10}^{-3}}}-25=9975\,\Omega \]


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