JAMIA MILLIA ISLAMIA Jamia Millia Islamia Solved Paper-2004

  • question_answer
        A rod of certain metal is 1.0 m long and 0.6 cm in diameter and its resistance is \[18\Omega \]Another disc made of same metal is 2.0 cm in dimeter and 1.0 mm long. The resistance between the round faces of the disc is :

    A) \[8\Omega \].

    B)  \[18\Omega \]

    C) \[8\Omega \]

    D)  \[8\Omega \]

    Correct Answer: D

    Solution :

                    From relation \[0.\text{99}\times \text{1}{{0}^{\text{6}}}\text{volt}\] Or           \[q=10\mu C\]   \[{{B}_{0}}\]                       ??(1)                 And        \[B_{0}^{2}\] \[2B_{0}^{{}}\]                  ?..(2) Dividing equation (2) by (1), we get \[\sqrt{2}B_{0}^{{}}\] Or                           \[B_{0}^{{}}\]


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