Exam-style question
Try this first
Which of the following best describes Lenz's law?.
- A.It states that induced emf is proportional to the rate of change of magnetic flux.
- B.It states that induced current flows in a direction that opposes the change in magnetic flux.
- C.It states that magnetic fields can only be created by moving charges.
- D.It states that energy is conserved in electromagnetic systems.
Model answer
What a good answer should say
- It states that induced current flows in a direction that opposes the change in magnetic flux.
Explanation
Why this works
Lenz's law specifically describes the direction of induced current as opposing the change in magnetic flux, which is crucial for understanding electromagnetic induction.
Common mistake
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