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  3. CET Karnataka Engineering

CET Karnataka Engineering CET - Karnataka Engineering Solved Paper-2002

  • question_answer
    A cell supplies a current of 0.9 A through a \[2\Omega \]resistor and a current of 0-3 A through a \[7\Omega \]resistor. The internal resistance of the cell is:

    A) \[1.2\,\Omega \]                             

    B) \[2.0\,\,\Omega \]

    C)  \[0.5\,\,\Omega \]                        

    D)  \[1.0\,\,\Omega \]

    Correct Answer: C

    Solution :

    By Grip rule magnetic field due to straight segment of current at C = zero. Magnetic field due to quarter circle at \[C=\frac{{{\mu }_{0}}I}{8r}\] vertically down to the paper.


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