Question

The reactance of a circuit is zero. It is possible that the circuit contains

• A. an inductor and a capacitor
• B. an inductor but no capacitor
• C. a capacitor but no inductor
• D. neither an inductor nor a capacitor

Answer 1

Answer: (A), (D)

The correct options are
A an inductor and a capacitor
D neither an inductor nor a capacitor

Answer: A an inductor and a capacitor, B neither an inductor nor a capacitor
Reactance in electrical and electronic systems is the opposition of a circuit element to a change of electric current or voltage.Ideally a resistor has zero reactance.
Therefore in a circuit, reactance can be zero either if there are no inductors and capacitors in the circuit, or the individual reactance of inductors and capacitors cancel each other, making net reactance zero.