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NEET Sample Paper NEET Sample Test Paper-6

  • question_answer
    There is an electric field E in X-direction. If work done in moving a charge \[0.2C\]through a distance of 2m along a line making an, angle of \[{{60}^{o}}\] with X-axis is 4.0 Joule. The value of E is:

    A)  \[\sqrt{3}\,\,N/C\]                  

    B)  \[4\,\,N/C\]

    C)  \[5\,\,N/C\]                 

    D)  \[20\,\,N/C\]

    Correct Answer: D

    Solution :

    As,         \[\omega =F\,\,ds\,\,\cos \theta \]         \[=q\varepsilon ds\,\,\cos \theta \] \[4=0.2\varepsilon \times 2\cos \,{{60}^{o}}\]                 \[\Rightarrow \]               \[\varepsilon =20\,N/C\]


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