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NEET Sample Paper NEET Sample Test Paper-28

  • question_answer
    In the circuit shown in figure, \[{{V}_{A}}-{{V}_{B}}=19V.\] What is the potential difference across the \[3\mu F\] capacitor.

    A)  7 V                             

    B)  8 V

    C)  23 V                           

    D)  4 V

    Correct Answer: B

    Solution :

    Let charge in capacitor is q then apply KVL from A to B \[{{V}_{A}}-\frac{q}{2}-8-\frac{q}{3}+15-\frac{q}{4}={{V}_{B}}\] \[19-8+15+\frac{(-6q-4q-3q)}{12}=0\] \[26=\frac{13q}{12}\] \[q=24\mu C\] \[{{V}_{3}}=\frac{q}{3}=\frac{24}{3}=8V\]


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