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JEE Main & Advanced Physics Electrostatics & Capacitance Question Bank Electric Field and Potential

  • question_answer
    A particle has a mass 400 times than that of the electron and charge is double than that of a electron. It is accelerated by 5V of potential difference. Initially the particle was at rest, then its final kinetic energy will be [MP PMT 1990; DPMT 1999]

    A)            5 eV                                         

    B)            10 eV

    C)            100 eV

    D)                                      2000 eV

    Correct Answer: B

    Solution :

                 \[\Delta E=2e\times 5V=10eV\]Þ Final kinetic energy \[=10eV\]


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