Physics (AS & A Level) · May / June 2018 · Paper 13 · Question 27

Two parallel metal plates are situated 20 cm apart in a vacuum. They are connected to two sources of potential difference as shown. [diagram: two parallel plates 20 cm apart, top plate connected to +800 V source, bottom plate connected to +300 V source, a proton between the plates] A proton is released in the space between the plates. What is the magnitude and direction of the acceleration of the proton?

1. A2.4 × 10^11 m s^–2 downwards
2. B2.4 × 10^11 m s^–2 upwards
3. C5.3 × 10^11 m s^–2 downwards
4. D5.3 × 10^11 m s^–2 upwards

As printed in the paper