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JIPMER Jipmer Medical Solved Paper-2004

  • 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 \[R=\frac{R\text{/}n}{n}=\frac{R}{{{n}^{2}}}\]


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