MCQ
The energy which an ${e^ - }$ acquires when accelerated through a potential difference of $1 \,volt$ is called
- A$1 \,Joule$
- ✓$1$ $ Electron volt$
- C$1\, Erg$
- D$1\, Watt$.
✓
Answer
Correct option: B.
$1$ $ Electron volt$
b
(b) this question can be solved by using the formula, $K . E=e V,$ where $e$ is the charge of an electron and $V$ is voltage. so here the kinetic energy would be equal to $\left(1.6 \times 10^{-19}\right) \times 1$ which is $1 e V$
(b) this question can be solved by using the formula, $K . E=e V,$ where $e$ is the charge of an electron and $V$ is voltage. so here the kinetic energy would be equal to $\left(1.6 \times 10^{-19}\right) \times 1$ which is $1 e V$
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