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

  • question_answer
    How much kinetic energy will be gained by an \[\alpha -\]particle in going from a point at \[70\,V\] to another point at \[50\,V\] [RPET 1997]

    A)                    \[40\,eV\]

    B)                                      \[40\,keV\]

    C)                    \[40MeV\]

    D)                                      \[0\,eV\]

    Correct Answer: A

    Solution :

                         \[KE=q({{V}_{1}}-{{V}_{2}})=2\times 1.6\times {{10}^{-19}}\times (70-50)=40\,eV\]


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