Two infinitely large insulating plates are uniformly charged such that the potential difference between them is $V_2-V_1=20\text{V}$. The plates are separated by $d=0.1\text{m}$. An electron is released from rest on the inner surface of plate 1. What is its speed when it hits plate 2? ($e=1.6\times 10^{-19}\text{C}$, $m_e=9.11\times 10^{-31}\text{kg}$)

1. A
   $32\times 10^{-19}\text{m/s}$
2. B
   $2.65\times 10^6\text{m/s}$
3. C
   $7.02\times 10^{12}\text{m/s}$
4. D
   $1.87\times 10^6\text{m/s}$