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JCECE Engineering JCECE Engineering Solved Paper-2015

  • question_answer
    A tetrahedral is consisting of 6 identical wires as shown in the figure. Each wire is having a resistance of\[4\Omega \]. When an ideal cell of \[emf\,5\,\,V\] is connected across \[AB\] as shown, then current through \[OR\] is

    A) \[4\,\,A\]                                            

    B) \[\frac{6}{19}A\]

    C) \[zero\]                                               

    D) \[1\,\,A\]

    Correct Answer: C

    Solution :

    From the symmetry of the figure, it is clear that \[O\] and \[R\]are at same potential so no current flows from \[OR\] branch. Thus\[,{{I}_{OR}}=0\,\,(zero)\].


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