| Date | November 2011 | Marks available | 1 | Reference code | 11N.1.HL.TZ0.24 |
| Level | Higher level | Paper | Paper 1 | Time zone | Time zone 0 |
| Command term | Question number | 24 | Adapted from | N/A |
Question
The peak value of an alternating sinusoidal potential difference is 100V. The approximate rms value of the potential difference will be
A. 50V.
B. 70V.
C. 140V.
D. 200V.
Markscheme
B
Examiners report
Far too many candidates thought that the rms value was half of the peak value.
Syllabus sections
Additional higher level (AHL) » Topic 11: Electromagnetic induction » 11.2 – Power generation and transmission
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