Physics (AS & A Level) · May / June 2017 · Paper 12 · Question 31

The path of an electron with initial speed v in the uniform electric field between two parallel plates is shown. The vertical deflection x is measured at the right-hand edge of the plates. The distance between the plates is halved. The potential difference between the plates remains the same. What will be the new deflection of the electron with the same initial speed v?

1. Ax
2. B\sqrt{2}x
3. C2x
4. D4x

As printed in the paper