The combined effect of resistance and reactance in a circuit is known as
Correct answer: C. impedance
- A. inductor
- B. capacitor
- C. impedance
- D. modulation
Explanation
The correct answer is 'impedance.' In a circuit, impedance is the combination of resistance (which opposes the flow of current) and reactance (which is the opposition to the change in voltage). Inductors and capacitors are specific components that contribute to reactance, but impedance encompasses both. Modulation, on the other hand, is unrelated to the combined effect of resistance and reactance in a circuit.
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About AC Through Resistor, Capacitor and Inductor
Alternating current through a resistor, capacitor and inductor involves phase relationships between voltage and current, reactance, impedance and energy transfer. A resistor keeps voltage and current in phase, while a capacitor and inductor produce opposite phase shifts, a distinction used in circuit diagrams and numerical calculations.
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