The velocity acquired by an electron at rest when subjected to a uniform electric field of potential difference 180 V is (Mass of electron $=9 \times 10^{-31} \mathrm{~kg}$ and charge of electron $=1.6 \times 10^{-19} \mathrm{C}$ )

• A

  $400 \mathrm{~km} \mathrm{~s}^{-1}$
• B

  $4000 \mathrm{~km} \mathrm{~s}^{-1}$
• C

  $800 \mathrm{~km} \mathrm{~s}^{-1}$
• Correct answer
  D

  $8000 \mathrm{~km} \mathrm{~s}^{-1}$

Hence, the correct answer is option: 'D'.