Due to relative motion of a magnet with respect to coil, an emf is induced in the coil in accordance with
Answer & explanation
Correct answer: option 2
The correct answer is Option (2) → Faraday's law
Moving a magnet relative to a coil changes the magnetic flux linked with the coil, and a changing flux induces an emf in it. This is Faraday's law of electromagnetic induction, \( \varepsilon = -d\Phi_B/dt \).
NCERT (2026-27):
The Experiments of Faraday and Henry – “… It shows that it is the relative motion between the magnet and the coil that is responsible for generation (induction) of electric current in the coil.”
Faraday’s Law of Induction – “… The common point in all these observations is that the time rate of change of magnetic flux through a circuit induces emf in it. Faraday stated experimental observations in the form of a law called Faraday’s law of electromagnetic induction.”