Question Detail
Question
The phenomenon of producing an induced emf with the aid of a magnetic field is __________.
Correct Answer
Option D is the correct answer.
Detailed Explanation
The phenomenon described is Faraday's Law of Electromagnetic Induction, which states that a changing magnetic field through a coil or conductor induces an electromotive force (EMF) and thus a current.
Hint
This is a fundamental principle in electromagnetism related to how generators and transformers work.