2. Solved Papers
  3. AMU Medical

AMU Medical AMU Solved Paper-2013

  • question_answer
    In the potentiometer circuit shown in the figure, the balance length AJ = 58 when switch S is open. When switch S is closed and the value of \[R=5\,\Omega \], balance length AJ = 50 cm. The internal resistance of the cell C is

    A)  \[1.2\,\,\Omega \]                        

    B)  \[1.0\,\,\Omega \]

    C)  \[0.8\,\,\Omega \]   

    D)  \[0.6\,\,\Omega \]

    Correct Answer: C

    Solution :

                     Given \[{{l}_{1}}=58\,cm,\,{{l}_{2}}=50\,cm\,R=5\] \[\therefore \]  \[r=R\left( \frac{{{l}_{1}}}{{{l}_{2}}}-l \right)=5\left( \frac{58}{50}-1 \right)=0.8\,\Omega \]                          


You need to login to perform this action.
You will be redirected in 3 sec spinner