JAMIA MILLIA ISLAMIA Jamia Millia Islamia Solved Paper-2004

  • question_answer
        The emf of a primary cell is 2 volt. When it is short circuited it provides 4A current then the internal resistance of cell will be :

    A)  \[3.5\times {{10}^{-7}}s\]

    B)  \[\text{2}.\text{6}\times \text{1}{{0}^{-\text{4}}}\]

    C)  \[\text{2}.\text{6}\times \text{1}{{0}^{-\text{4}}}\]

    D)  \[\text{1}.\text{4 }\times \text{1}{{0}^{-\text{4}}}\]

    Correct Answer: D

    Solution :

                    From the relation current \[(e=1.6\times {{10}^{-19}}C)\] Or           \[\text{1}.\text{99}\times \text{1}{{0}^{\text{6}}}\text{volt}\] Or           \[\text{2}.\text{9}\times \text{1}{{0}^{\text{6}}}\text{volt}\]


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