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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 with a resistance of 12 W gives full scale deflection when a current of 3 mA is passed. It is required to convert it into a voltmeter which can read up to 18 V.  the resistance to be connected is                                                [Pb. PMT 2000]

    A)         6000 W

    B)                        5988 W

    C)         5000 W                            

    D)         4988 W

    Correct Answer: B

    Solution :

                                             \[R=\frac{V}{{{i}_{g}}}-G=\frac{18}{3\times {{10}^{-3}}}-12=5988\,\Omega \]


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