To induce an emf in a coil the linking magnetic flux:
Correct answer: D. Can either increase or decrease
- A. Must dcrease
- B. Must increase
- C. Must remain constant
- D. Can either increase or decrease
Explanation
Induced emf can only be produced when magnetic flux changes as stated in faradays law
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About Electromagnetism
Magnetic flux density and magnetic flux describe the strength of a magnetic field and the field passing through a surface. A charged particle moving through a magnetic field experiences a force perpendicular to its velocity and may follow circular or helical motion, depending on the angle between velocity and field.
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