NEET Sample Paper NEET Sample Test Paper-9

  • question_answer There uncharged capacitors of capacitance \[1\mu f,\,2\mu f\]and \[3\mu f\] are connected shown in figure. If potentials at point, P,Q and R are IV, 2V, 3V respectively, then, potential at Q is:             

    A)  \[\frac{18}{11}\,V\]                   

    B)  \[\frac{11}{18}\,V\]

    C)  \[5\,V\]                       

    D)  None of these

    Correct Answer: D

    Solution :

    From KCL, \[1(V-1)+2(V-2)+3(V-3)=0\] (Here V= Potential point m)             \[V=\frac{7}{3}\] Volt             (Note that the net change on the plates connected to the M is zero.)

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