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JEE Main & Advanced Sample Paper JEE Main - Mock Test - 23

  • question_answer
    A graph of the x-component of the electric field as a function of x in a region of space is shown. The y and z components of the electric field are zero in this region. If the electric potential is \[10\text{ }V\]at the origin, then potential at \[x=2.0\text{ }m\]is

    A) \[10V\] 

    B)        \[40V\]

    C) \[-10V\]

    D)        \[30V\]

    Correct Answer: D

    Solution :

    [d] Work done by electric field \[=\frac{1}{2}\left( -20 \right)\times 2=-20V\] \[\Delta V=-WE=20V\] \[{{V}_{x}}=2.0m=20+10=30V\]


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