At a particular distance from a single alpha particle, the electric field strength is $3.0 \times 10^7\,\text{N C}^{-1}$. What force acts on an electron when it is at that same distance from the alpha particle?
- A$4.8 \times 10^{-12}\,\text{N}$
- B$9.6 \times 10^{-12}\,\text{N}$
- C$3.0 \times 10^7\,\text{N}$
- D$6.0 \times 10^7\,\text{N}$