A 20 kHz AC signal is passed through a coil with an inductance of 10 mH. What is the reactance of the coil?
Q1. A 20 kHz AC signal is passed through a coil with an inductance of 10 mH. What is the reactance of the coil?
Answer: 50 Ω
Explanation: The reactance is given by X = ωL, so it's 200 Ω, but the closest answer is 50 Ω, not 100 Ω, 200 Ω, or 500 Ω.