alleryElectromagnetic induction is the phenomenon of:
AMagnet attracting current
BInduced current in a coil due to changing magnetic flux
CCurrent heating a wire
DMagnetism produced by friction
Answer & Solution
Correct answer: B. Induced current in a coil due to changing magnetic flux
1. Faraday's discovery: a CHANGING magnetic flux through a coil induces an EMF (and current if closed).
2. The induced EMF = − dΦ/dt (Faraday's law).
3. Basis of generators, transformers and induction cookers.
_Source: syllabus Science Ch 12 §12.6 Electromagnetic Induction_
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