Exam-style question
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Using Lenz's law, describe the direction of the induced current when a magnet is moved towards a coil.
Model answer
What a good answer should say
- According to Lenz's law, the induced current will flow in a direction that opposes the change causing it.
- Therefore, if a magnet is moved towards the coil, the induced current will flow in a direction that creates a magnetic field opposing the approach of the magnet.
Explanation
Why this works
This answer demonstrates an understanding of Lenz's law and its application to electromagnetic induction. It tests the student's ability to apply theoretical knowledge to a practical scenario involving induced currents.
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