2. Solved Papers
  3. RAJASTHAN ­ PET

RAJASTHAN ­ PET Rajasthan PET Solved Paper-2001

  • question_answer
    To get the maximum current from a parallel combination of n identical cells each of internal resistance r in an external resistance R when

    A)  R>>r              

    B)  R<<r

    C)  R = r            

    D)  None of these

    Correct Answer: A

    Solution :

     When cells are connect in series, then internal resistance of cells is neglible comparison to external resistance. In series,   \[I=\frac{nE}{R+nr}\] If\[R>>nr,\]then\[I=n\frac{E}{R}\]


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