To pass your electrical exam you’ll need to understand what impedance is and how it operates.
What is impedance?
Impedance is the total opposition to current flow in a circuit.
What is the symbol for impedance?
The letter symbol for impedance is Z.
What is the unit of measure for impedance?
The unit of measure for impedance is the standard unit of measure for resistance, the ohm.
What formula is used to determine impedance?
What do the symbols in this equation stand for?
Z = Impedance
R = Resistance
XL = Inductive Reactance
XC = Capacitive Reactance
Each of these symbols represent a type of resistance that if present add to the overall resistance of the circuit.
What is inductive reactance and capacitive reactance and which formulas should be used to determine the resistance they bring to the circuit?
Our patient and knowledgeable instructors will help you learn how to properly interpret and answer questions that require an understanding of resistance, inductive and capacitive reactance as well as impedance on your electrical exam.
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