2. Solved Papers
  3. MGIMS WARDHA

MGIMS WARDHA MGIMS WARDHA Solved Paper-2008

  • question_answer
    A battery consists of a variable number (n) of identical cells, each having an internal resistance r connected in series. The terminals of the battery are short-circuited. A graph of current (\[l\] in the circuit versus the number of cells will be as shown in figure

    A)

    B)           

    C)

    D)

    Correct Answer: C

    Solution :

    For a two cell battery                                                                                                \[I=\frac{2E}{2r}=\frac{E}{r}\] Similarly, for a n cell battery                                                                                                \[I=\frac{nE}{2r}=\frac{E}{r}\] So, current in the circuit does not depend on number of cells in the battery. Hence, the correct graph will be (c).


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