DP Physics (last assessment 2024)
Question 22M.2.HL.TZ2.7a
| Date | May 2022 | Marks available | [Maximum mark: 2] | Reference code | 22M.2.HL.TZ2.7a |
| Level | HL | Paper | 2 | Time zone | TZ2 |
| Command term | Outline | Question number | a | Adapted from | N/A |
a.
[Maximum mark: 2]
22M.2.HL.TZ2.7a
A metal sphere is charged positively and placed far away from other charged objects. The electric potential at a point on the surface of the sphere is 53.9 kV.
(a)
Outline what is meant by electric potential at a point.
[2]
Markscheme
the work done per unit charge ✓
In bringing a small/point/positive/test «charge» from infinity to the point ✓
Allow use of energy per unit charge for MP1
Examiners report
a) Well answered.
b) Generally, well answered, but there were quite a few using r + 2.8.
ci) Very few had problems to recognize the perpendicular angle
cii) Good simple calculation
ciii) Many had a good go at this, but a significant number tried to answer it based on forces.
