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JEE Main & Advanced Physics Electrostatics & Capacitance JEE PYQ-Electrostatics and Capacitance

  • question_answer
    There is a uniform electrostatic field in a region. The potential at various points on a small sphere centred at P, in the region, is found to vary between in limits 589.0V to 589.8 V. What is the potential at a point on the sphere whose radius vector makes an angle of 60° with the direction of the field? [JEE Online 08-04-2017]

    A) 589.4 V

    B) 589.5 V

    C) 589.2 V

    D) 589.6 V

    Correct Answer: A

    Solution :

    [a] \[\Delta V=E.d\]
    0.8 = Ed (max)
    \[\Delta V=Ed\cos \theta =0.8\times \cos 60\]
    = 0.4
    589.4


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