In a series AC circuit, how does the total impedance (Z) relate to resistance (R
Practice Questions
Q1
In a series AC circuit, how does the total impedance (Z) relate to resistance (R) and reactance (X)?
Z = R + X
Z = R - X
Z = √(R^2 + X^2)
Z = R * X
Questions & Step-by-Step Solutions
In a series AC circuit, how does the total impedance (Z) relate to resistance (R) and reactance (X)?
Correct Answer: Z = √(R^2 + X^2)
Step 1: Understand that in a series AC circuit, there are two main components: resistance (R) and reactance (X).
Step 2: Resistance (R) is the part of the circuit that opposes the flow of current and is measured in ohms (Ω).
Step 3: Reactance (X) is the part of the circuit that opposes the change in current due to capacitors and inductors, also measured in ohms (Ω).
Step 4: The total impedance (Z) is a measure of how much the circuit resists the flow of alternating current (AC).
Step 5: To find the total impedance (Z), you use the formula Z = √(R^2 + X^2).
Step 6: In this formula, you square the resistance (R) and the reactance (X), add those two values together, and then take the square root of the result.
Step 7: The final value you get is the total impedance (Z) of the circuit.
