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JCECE Medical JCECE Medical Solved Paper-2003

  • question_answer
    Three resistors \[2\Omega ,\,3\Omega \] and \[4\Omega \] are connected as shown in the given diagram. The equivalent resistance will be:

    A) \[\frac{12}{13}\]

    B)  \[\frac{11}{10}\]

    C)  2

    D)  \[\frac{10}{11}\]

    Correct Answer: A

    Solution :

     The three resistances shown in figure are connected in parallel. So, their equivalent resistance is given by \[\frac{1}{R}=\frac{1}{2}+\frac{1}{3}+\frac{1}{4}\] \[=\frac{6+4+3}{12}=\frac{13}{12}\] \[\therefore \] \[R=\frac{12}{13}\Omega \] Note: The equivalent resistance in parallel combination is less than either of the resistances.                          


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