A device is connected to a power source, and its impedance is measured to be 20 Ω at a frequency of 50 Hz. If the resistance is 10 Ω, what is the capacitive reactance?
Q1. A device is connected to a power source, and its impedance is measured to be 20 Ω at a frequency of 50 Hz. If the resistance is 10 Ω, what is the capacitive reactance?
Answer: 15 Ω
Explanation: The capacitive reactance is given by Xc = √(R^2 - Z^2) = √(10^2 - 20^2) = 15 Ω.