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NEET AIPMT SOLVED PAPER SCREENING 2005

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


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