| Date | November 2012 | Marks available | 1 | Reference code | 12N.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
A coil and a magnet can move horizontally to the left or to the right at the same speed.
In which of the following will a conventional current be induced in the direction shown in the diagram when both the magnet and the coil are moving?
Markscheme
A
Examiners report
This is an application of Lenz‟s law that needs to be fully understood. The conventional current implies a south pole at the left end of the coil and so must oppose the motion of the magnet. The magnet must either be moving away from the coil or the coil must be moving away from the magnet.
Syllabus sections
Additional higher level (AHL) » Topic 11: Electromagnetic induction » 11.1 – Electromagnetic induction
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