A solenoid is described as a long coil of wire with:
ANo loops at all
BOnly straight sections
CMany turns or loops
DExactly one flat loop
Answer & Solution
Correct answer: C. Many turns or loops
1. A solenoid is distinguished from a single loop.
2. Current-carrying wires produce magnetic fields.
3. A solenoid is a long coil of wire.
4. It has many turns or loops, as opposed to a flat loop.
_Source: OpenStax College Physics for AP Courses 2e (CC BY 4.0), Ch 22 'Magnetism', sections 22.1-22.11_
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