1. Tardigrade
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  3. Chemistry
  4. An electron of mass m and charge e is accelerated from rest through a potential difference V. The kinetic energy of the electron is:

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Q. An electron of mass $m$ and charge $e$ is accelerated from rest through a potential difference $V$. The kinetic energy of the electron is:

Structure of Atom

Solution:

In the given conditions, the electron will acquire a velocity $V$

$v=\sqrt{\frac{2 e V}{m}}$

$K.E. =\frac{1}{2} m v^{2}$

$=\frac{1}{2} m \cdot \frac{2 \,eV }{m}=e V$