Exam-style question
Try this first
How does Lenz's law relate to induced emf in a circuit?.
- A.It states that induced emf opposes the change causing it
- B.It states that induced emf enhances the change causing it
- C.It states that induced emf has no effect on the circuit
- D.It states that induced emf is always positive
Model answer
What a good answer should say
- It states that induced emf opposes the change causing it
Explanation
Why this works
Lenz's law indicates that the direction of induced emf will always oppose the change in magnetic flux that produced it, ensuring conservation of energy.
Common mistake
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