alleryStart learning →A circuit whose source varies periodically, particularly sinusoidally, is known as:
AA direct current circuit
BA short circuit only
CAn open circuit only
DAn alternating current circuit
Answer & Solution
Correct answer: D. An alternating current circuit
1. The waveform of the source names the circuit.
2. Direct current is the flow of charge in only one direction.
3. The source may instead vary periodically, particularly sinusoidally.
4. In that case the circuit is known as an alternating current circuit.
_Source: OpenStax College Physics for AP Courses 2e (CC BY 4.0), Ch 20 'Electric Current, Resistance, and Ohm's Law', sections 20.1-20.7_
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