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JEE Main & Advanced Physics Current Electricity, Charging & Discharging Of Capacitors / वर्तमान बिजली, चार्ज और कैपेसिटर का निर Question Bank Self Evaluation Test - Current Electricity

  • question_answer
    A potential difference of 220 V is maintained across a 12000 ohm rheostat, as shown in the figure. The voltmeter has a resistance of 6000 ohm and point c is at one-fourth of the distance from a to b, Therefore, the reading of the voltmeter will be

    A) 32 V                

    B)        36 V

    C) 40 V                            

    D) 42 V

    Correct Answer: C

    Solution :

    [c] \[\left( \frac{I}{4}\times 12000 \right)/6000=2000,\] \[I=\frac{220}{9000+12000}A\] \[\therefore \] Potential difference across voltmeter = 40 V.


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