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NEET Sample Paper NEET Sample Test Paper-2

  • question_answer
    the meter bridge circuit shown in figure is balanced when jockey J divides wire AB in two parts AJ and BJ in the ratio of \[1:2\]. The unknown resistance Q has value:

    A)  \[1\Omega \]

    B)  \[3\Omega \]

    C)  \[4\Omega \]

    D)  \[7\Omega \]

    Correct Answer: B

    Solution :

    For the bridge circuits \[\frac{1.5}{{{R}_{Ad}}}=\frac{{{R}_{a}}}{{{R}_{JB}}}\] \[\Rightarrow \] \[{{R}_{Q}}=\frac{{{R}_{JB}}}{{{R}_{Ad}}}\times 1.5=\frac{2}{1}\times 1.5\] \[\Rightarrow \]\[{{R}_{Q}}=3\Omega \]


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