Exam-style question
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What is the effect of increasing the speed of a conductor moving through a magnetic field on the induced emf?.
- A.Induced emf decreases
- B.Induced emf remains constant
- C.Induced emf increases
- D.Induced emf becomes zero
Model answer
What a good answer should say
- Induced emf increases
Explanation
Why this works
According to Faraday's law, the induced emf is directly proportional to the rate of change of magnetic flux. Increasing the speed of the conductor increases the rate of change, thus increasing the induced emf.
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