What makes a circuit an RC circuit?
AIt holds a resistor and a capacitor
BIt holds a resistor and a coil of wire
CIt holds two capacitors and a switch
DIt holds a resistor and a rectifier
Answer & Solution
Correct answer: A. It holds a resistor and a capacitor
1. The letters name the two components: R for resistance and C for capacitance.
2. The capacitor stores charge while the resistor limits how fast that charge can arrive.
3. Together they set a characteristic time for the circuit rather than an instant response.
4. A coil or a rectifier would make a different circuit with different behaviour altogether.
_Source: OpenStax College Physics (CC BY 4.0), Ch 21 "Circuits and DC Instruments", section 21.6 DC Circuits Containing Resistors and Capacitors_
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