A pair of parallel plates are separated by $25\ \text{mm}$, and the potential difference across them is $12\ \text{kV}$. What is the force on an electron when it is located in the uniform electric field between the plates?
- A$4.8 \times 10^{-20}\ \text{N}$
- B$7.7 \times 10^{-20}\ \text{N}$
- C$4.8 \times 10^{-17}\ \text{N}$
- D$7.7 \times 10^{-14}\ \text{N}$