DP Physics (last assessment 2024)
Question 18M.2.HL.TZ2.a
| Date | May 2018 | Marks available | [Maximum mark: 2] | Reference code | 18M.2.HL.TZ2.a |
| Level | HL | Paper | 2 | Time zone | TZ2 |
| Command term | State | Question number | a | Adapted from | N/A |
a.
[Maximum mark: 2]
18M.2.HL.TZ2.a
The diagram shows a potential divider circuit used to measure the emf E of a cell X. Both cells have negligible internal resistance.
State what is meant by the emf of a cell.
[2]
Markscheme
the work done per unit charge
in moving charge from one terminal of a cell to the other / all the way round the circuit
Award [1] for “energy per unit charge provided by the cell”/“power per unit current”
Award [1] for “potential difference across the terminals of the cell when no current is flowing”
Do not accept “potential difference across terminals of cell”
[2 marks]
