| Date | November 2012 | Marks available | 1 | Reference code | 12N.1.HL.TZ0.31 |
| Level | Higher level | Paper | Paper 1 | Time zone | Time zone 0 |
| Command term | Question number | 31 | Adapted from | N/A |
Question
In an ideal transformer
I. the power output exceeds the power input
II. the magnetic flux produced by the primary coil entirely links the secondary coil
III. there are more turns on the secondary coil than on the primary coil.
Which of the above statements must be true?
A. I and II only
B. I and III only
C. II only
D. III only
Markscheme
C
Examiners report
[N/A]
Syllabus sections
Additional higher level (AHL) » Topic 11: Electromagnetic induction » 11.2 – Power generation and transmission
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