JIPMER Jipmer Medical Solved Paper-2013

  • question_answer
    A 5 amp fuse wire can withstand a maximum power of 1 W in circuit. The resistance of the fuse wire is

    A)  0.2\[\Omega \]              

    B)         \[5\,\,\Omega \]

    C)  0.4\[\Omega \]              

    D)         0.04 \[\Omega \]

    Correct Answer: D

    Solution :

    Power    \[P={{i}^{2}}R\] \[\Rightarrow \]               \[R=\frac{P}{{{i}^{2}}}\] Given, \[P=1\,W,\] and \[i=5A\] \[\therefore \]  \[R=\frac{1}{{{(5)}^{2}}}=0.04\,\Omega \]


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