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JEE Main & Advanced Physics Electrostatics & Capacitance Question Bank Graphical Questions

  • question_answer
    Two identical point charges are placed at a separation of d. P is a point on the line joining the charges, at a distance x from any one charge. The field at P is E, E is plotted against x for values of x from close to zero to slightly less than d. Which of the following represents the resulting curve

    A)  

    B)                                             

    C)  

    D)                                             

    Correct Answer: D

    Solution :

                       At mid point, E = 0 Before mid point, E is positive. This is maximum near the charge and decreases towards mid point. After mid point, E is negative, The curve crosses x-axes at x-axis at x = d/2. From centre to end, E decreases. The variation is shown by curve.


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