JIPMER Jipmer Medical Solved Paper-2007

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


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