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12th Class Physics Current Electricity, Charging & Discharging Of Capacitors / वर्तमान बिजली, चार्ज और कैपेसिटर का निर Question Bank Case Based (MCQs) - Current Electricity

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

    A) 20 cm

    B) 50 cm

    C) 40 cm

    D) 60 cm

    Correct Answer: C

    Solution :

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


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