In an AC circuit, what does the impedance (Z) represent?
Practice Questions
1 question
Q1
In an AC circuit, what does the impedance (Z) represent?
Total opposition to current flow
Only resistance
Only reactance
Voltage drop
Impedance (Z) is the total opposition that a circuit offers to the flow of alternating current, combining both resistance and reactance.
Questions & Step-by-step Solutions
1 item
Q
Q: In an AC circuit, what does the impedance (Z) represent?
Solution: Impedance (Z) is the total opposition that a circuit offers to the flow of alternating current, combining both resistance and reactance.
Steps: 4
Step 1: Understand that in an AC circuit, current changes direction periodically.
Step 2: Know that impedance (Z) is a measure of how much the circuit resists this changing current.
Step 3: Realize that impedance includes two parts: resistance (which opposes current flow) and reactance (which opposes changes in current due to capacitors and inductors).
Step 4: Remember that impedance is measured in ohms, just like resistance.
