🔍 Key Concepts

• Series AC circuit and how impedance combines for resistance (R) and reactance (X) • Relationship between impedance (Z), resistance (R), and reactive components in a right triangle • Effect of zero capacitive reactance (Xc = 0) on the total reactance

💭 Think About

• How do you combine resistance and inductive reactance in a series AC circuit—do you simply add them, or do you treat them like the sides of a right triangle? • With Xc = 0, what is the net reactance of the circuit, and how does that affect the impedance calculation? • If R is one side of a right triangle and X is the other, what mathematical operation gives you the hypotenuse (Z)?

✅ Before You Answer

• Confirm that in a series AC circuit, resistance and reactance are combined using the impedance formula, not simple arithmetic addition. • Compute the net reactance first, considering that capacitive reactance is zero. • Use the Pythagorean theorem with correct values and check that your result is close to one of the choices.