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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
    If the ammeter in the given circuit reads 2 A, the resistance R is                                                 [Orissa JEE 2003]

    A)         1 ohm

    B)         2 ohm

    C)         3 ohm

    D)         4 ohm

    Correct Answer: A

    Solution :

                                             \[i=\frac{V}{R}\Rightarrow \,2=\frac{6}{\frac{6\times 3}{6+3}+R}=\frac{6}{2+R}\]Þ \[R=1\,\,\Omega \].


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