| Date | May 2018 | Marks available | 2 | Reference code | 18M.2.HL.TZ2.4 |
| Level | Higher level | Paper | Paper 2 | Time zone | Time zone 2 |
| Command term | Comment | Question number | 4 | Adapted from | N/A |
Question
The diagram shows a potential divider circuit used to measure the emf E of a cell X. Both cells have negligible internal resistance.
Cell X is replaced by a second cell of identical emf E but with internal resistance 2.0 Ω. Comment on the length of AC for which the current in the second cell is zero.
Markscheme
since the current in the cell is still zero there is no potential drop across the internal resistance
and so the length would be the same
OWTTE
[2 marks]
Examiners report
[N/A]
Syllabus sections
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