DP Physics (first assessment 2025)
Question 19N.2.SL.TZ0.5
Date | November 2019 | Marks available | [Maximum mark: 7] | Reference code | 19N.2.SL.TZ0.5 |
Level | SL | Paper | 2 | Time zone | TZ0 |
Command term | Calculate, Describe, Show that | Question number | 5 | Adapted from | N/A |
5.
[Maximum mark: 7]
19N.2.SL.TZ0.5
An electron is placed at a distance of 0.40 m from a fixed point charge of –6.0 mC.
(a)
Show that the electric field strength due to the point charge at the position of the electron is 3.4 × 108 N C–1.
[2]
Markscheme
✔
OR ✔
NOTE: Ignore any negative sign.

(b(i))
Calculate the magnitude of the initial acceleration of the electron.
[2]
Markscheme
OR ✔
✔
NOTE: Ignore any negative sign.
Award [1] for a calculation leading to
Award [2] for bald correct answer

(b(ii))
Describe the subsequent motion of the electron.
[3]
Markscheme
the electron moves away from the point charge/to the right «along the line joining them» ✔
decreasing acceleration ✔
increasing speed ✔
NOTE: Allow ECF from MP1 if a candidate mistakenly evaluates the force as attractive so concludes that the acceleration will increase
