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Punjab Medical Punjab - MET Solved Paper-2003

  • question_answer
    A wire of resistance \[R\] is divided in equal parts, then these parts are joined in parallel, the equivalent resistance of the combination will be:

    A) \[nR\]                                  

    B) \[\frac{R}{n}\]

    C) \[\frac{n}{R}\]                                  

    D) \[\frac{R}{{{n}^{2}}}\]

    Correct Answer: D

    Solution :

    Resistance of one part\[=\frac{R}{n}\] Now equivalent resistance of \[n\] parts each of resistance \[\frac{R}{n}\] in parallel is given by                 \[R=\frac{R/n}{n}=\frac{R}{{{n}^{2}}}\]


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