alleryA toroid can be viewed as a solenoid that has been:
ATurned inside out
BBent into a ring
CCut into halves
DStretched flat
Answer & Solution
Correct answer: B. Bent into a ring
1. Start with a straight solenoid.
2. Curve it round until its ends meet.
3. The result is a toroid.
_Source: syllabus Physics Part I, Chapter 4, Moving Charges and Magnetism._
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