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RAJASTHAN ­ PET Rajasthan PET Solved Paper-2001

  • question_answer
    If potential and current are\[V=(100\pm 0.5)\]volt and\[I=(10\pm 0.2)\text{ }A\]respectively, then value of resistance will be

    A)  (10 ± 0.7)\[\Omega \]       

    B)  (5 ± 2)\[\Omega \]

    C)  (0.1 ± 2)\[\Omega \]        

    D)  None of these

    Correct Answer: A

    Solution :

     Maximum error \[=0.5+0.2=0.7\] \[\therefore \] \[R=\frac{V}{I}\pm error=\frac{100}{10}\pm 0.7\] \[=(10\text{ }\pm 0.7)\Omega \]


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