| Date | May 2016 | Marks available | 1 | Reference code | 16M.1.HL.TZ0.30 |
| Level | Higher level | Paper | Paper 1 | Time zone | Time zone 0 |
| Command term | Question number | 30 | Adapted from | N/A |
Question
The diagram shows a conducting rod of length L being moved in a region of uniform magnetic field B. The field is directed at right angles to the plane of the paper. The rod slides on conducting rails at a constant speed v. A resistor of resistance R connects the rails.
What is the power required to move the rod?
A. zero
B. \(\frac{{vBL}}{R}\)
C. \(\frac{{{v^2}{B^2}{L^2}}}{R}\)
D. \(\frac{{{v^2}{B^2}{L^2}}}{{{R^2}}}\)
Markscheme
C
Examiners report
[N/A]
Syllabus sections
Additional higher level (AHL) » Topic 11: Electromagnetic induction » 11.1 – Electromagnetic induction
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