Exam-style question
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What is the relationship between magnetic flux and induced emf?.
- A.Induced emf is directly proportional to the rate of change of magnetic flux
- B.Induced emf is inversely proportional to magnetic flux
- C.Induced emf is independent of magnetic flux
- D.Induced emf is equal to the magnetic flux
Model answer
What a good answer should say
- Induced emf is directly proportional to the rate of change of magnetic flux
Explanation
Why this works
According to Faraday's law, the induced emf (ε) in a circuit is directly proportional to the rate of change of magnetic flux (dΦ/dt). This means that a faster change in magnetic flux will result in a greater induced emf.
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