The phenomenon in which a changing current in one coil induces an emf in another coil is:
Correct answer: B. Mutual induction
- A. Self-induction
- B. Mutual induction
- C. Eddy current
- D. Choke
Explanation
When an emf is produced in a coil because of the change in current in a coupled coil, the effect is called mutual inductance
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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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