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NEET Sample Paper NEET Sample Test Paper-38

  • question_answer
    Two batteries, one of emf 18 volts and internal resistance\[\,2\,\Omega \] and the other of emf 12 volts and internal resistance \[\,1\,\Omega ,\] are connected as shown. The voltmeter V will record a reading of

    A)  15 volt       

    B)  30 volt

    C)  14 volt       

    D)  18 volt

    Correct Answer: C

    Solution :

     Reading of voltmeter \[={{E}_{eq}}=\frac{{{E}_{1}}{{r}_{2}}+{{E}_{2}}{{r}_{1}}}{{{r}_{1}}+{{r}_{2}}}=\frac{18\times 1+12\times 2}{1+2}=14\,V\]


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