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12th Class Physics Current Electricity, Charging & Discharging Of Capacitors / वर्तमान बिजली, चार्ज और कैपेसिटर का निर Question Bank MCQ - Current Electricity

  • question_answer
    In a meter bridge experiment, the ratio of the left gap resistance to right gap resistance is 2 : 3, the balance point from left is:

    A) 60 cm              

    B) 50 cm  

    C) 40 cm                          

    D) 20 cm

    Correct Answer: C

    Solution :

    (c) 40 cm                         \[\frac{P}{Q}=\frac{{{l}_{1}}}{100-{{l}_{1}}}or\frac{2}{3}=\frac{{{l}_{1}}}{100-{{l}_{1}}}\]             Or         \[5{{l}_{1}}=200\,\,or\,\,{{l}_{1}}=40\,\,cm\]


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