Whenever the magnetic flux linked with an electric circuit changes, an emf is induced in the circuit. This is called:
Correct answer: A. Electromagnetic induction
- A. Electromagnetic induction
- B. Kirchoff's law
- C. Hysteresis loss
- D. Lenz's law
Explanation
When the magnetic flux linked with an electric circuit changes, an electromotive force (emf) is induced in the circuit. This is called electromagnetic induction. It is the phenomenon of generating an electromotive force (emf) across an electrical conductor in a changing magnetic field. The emf is induced in the direction that opposes the change in magnetic flux. It was first discovered by Michael Faraday in the early 19th century.
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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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