Two parallel metal plates are placed $20\,\text{cm}$ apart in a vacuum. They are linked to two sources of potential difference, as illustrated. A proton is released in the region between the plates. What are the magnitude and direction of the proton's acceleration?
- A$2.4 \times 10^{11}\,\text{m s}^{-2}$ downwards
- B$2.4 \times 10^{11}\,\text{m s}^{-2}$ upwards
- C$5.3 \times 10^{11}\,\text{m s}^{-2}$ downwards
- D$5.3 \times 10^{11}\,\text{m s}^{-2}$ upwards