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

  • question_answer
    A bullet of mass 2 gm is having a charge of \[2\,\mu C\]. Through what potential difference must it be accelerated, starting from rest, to acquire a speed of \[10\,m/s\] [CBSE PMT 2004]

    A)                    5 kV

    B)                                      50 kV

    C)                    5 V

    D)                                      50 V

    Correct Answer: B

    Solution :

                 By using \[\frac{1}{2}m{{v}^{2}}=QV\] Þ \[\frac{1}{2}\times 2\times {{10}^{-6}}\times {{(10)}^{2}}=2\times {{10}^{-6}}V\] Þ \[V=50\,kV\]


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