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NEET Sample Paper NEET Sample Test Paper-4

  • question_answer
    If electric field is given be \[E=\left( \frac{1}{{{X}^{2}}} \right)\uparrow V/m,\]the magnitude of potential difference between point \[X=10\text{ }cm\] and \[X=20\text{ }cm\] is

    A)  \[1\,V\]                       

    B)  \[2\,\,V\]

    C)  \[5\,\,V\]                     

    D)  \[10\,V\]

    Correct Answer: C

    Solution :

    As   \[dV=-\int{E.dx=-\int_{0.1}^{0.2}{\frac{1}{{{x}^{2}}}\,dx=-5V}}\]


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