allerySome trains brake with electromagnets held above the rails. The braking feels:
ASmooth
BJerky
CNoisy
DDelayed
Answer & Solution
Correct answer: A. Smooth
1. The magnets induce eddy currents in the rails.
2. The currents oppose the motion of the train.
3. With no mechanical linkage the braking is smooth.
_Source: syllabus Physics Part I, Chapter 6, Electromagnetic Induction._
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