October 16, 2026

Question of the Day

Q: A series circuit has R = 6 Ω, XL = 10 Ω and XC = 2 Ω. What is the total impedance?

Answer: 10 Ω In a series RLC circuit, Z = √(R² + (XL − XC)²). XL − XC = 10 − 2 = 8 Ω, so Z = √(6² + 8²) = √(36 + 64) = √100 = 10 Ω. So the impedance is 10 Ω; inductive and capacitive reactance partly cancel each other.

A series circuit has R = 6 Ω, XL = 10 Ω and XC = 2 Ω. What is the total impedance?