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  3. BCECE Medical

BCECE Medical BCECE Medical Solved Papers-2013

  • question_answer
    The internal resistance of a cell of emf 2 V is 0. 1\[\pi \]. If it is connected to a resistance of 3.9 \[\pi \], then the voltage across the cell will be (in volts)

    A)  2V                

    B)  0.5V

    C)  1.95V              

    D)  2.5V

    Correct Answer: C

    Solution :

    We know \[r=\left( \frac{E}{V}-1 \right)\,R\]   hence, \[R=3.9\pi ,\,\,E=2.0\,\,V,\,r=0.1\,\Omega \] hence, \[V=1.95\,V\]


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