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JEE Main & Advanced Physics Electrostatics & Capacitance Question Bank Mock Test - Electrostatics

  • question_answer
    Variation of electrostatic potential along the \[x\]-direction is shown in figure. The correct statement about electric field is

    A) \[x\]-component at point B is maximum

    B) \[x\]-component at point A is toward positive \[x\]-axis

    C) \[x\]-component at point C is along negative \[x\]-axis

    D) \[x\]-component at point C is along positive \[x\]- axis

    Correct Answer: D

    Solution :

    [d] We know, \[E=-\frac{dV}{dx}.\] At B, dV/dx=0, hence \[{{E}_{x}}=0\] At A, dV/dx is positive, hence \[{{E}_{x}}\]is negative. At C, dV/dx is negative, hence \[{{E}_{x}}\]is positive.


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