The current in the loop is induced by a changing magnetic field. Is it increasing or decreasing?
I think it is decreasing, but I can't really explain why.
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Lenz's Law watch
- Thread Starter
- 11-03-2016 00:05
- Study Helper
- 14-03-2016 21:05
- 15-03-2016 06:28
You are right. The magnetic field is decreasing. The evidence: the direction of the current in the loop.The induced field acts in the direction of the applied field to try to keep it constant.
That's because of the Lenz' s law, as you said.
- 17-03-2016 21:36
Lenz's law is that the induced current is in such a direction as to negate the change in magnetic flux.
Work out the direction of the field produced by the current. This will be in the opposite direction to the change of flux.