NEET Physics Current Electricity, Charging & Discharging Of Capacitors / वर्तमान बिजली, चार्ज और कैपेसिटर का निर NEET PYQ-Current Electricity Charging Capacitors

  • question_answer
    A galvanometer has a coil of resistance \[100\,\Omega \] 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                                [AIPMT (S) 2010]

    A)  \[900\,\Omega \]

    B)  \[1800\,\Omega \]

    C)  \[500\,\Omega \]           

    D)       \[1000\,\Omega \]

    Correct Answer: A

    Solution :

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


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