alleryA toroid is a hollow ring wound closely with many:
ATurns of wire
BSheets of iron
CPlates of copper
DRods of carbon
Answer & Solution
Correct answer: A. Turns of wire
1. The toroid is built on a circular ring.
2. A wire is wrapped round and round it.
3. So it carries a large number of turns of wire.
_Source: syllabus Physics Part I, Chapter 4, Moving Charges and Magnetism._
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