Impedance is a measure of the opposition to the flow of alternating current in a circuit. It is represented by the symbol Z and is measured in ohms (Ω).
To calculate impedance, you need to know the resistance, capacitance, and inductance of the circuit. Then, you can use the formula Z = √(R² + (XL - XC)²), where R is the resistance, XL is the inductive reactance, and XC is the capacitive reactance.
Resistance is the opposition to the flow of direct current in a circuit, while impedance is the opposition to the flow of alternating current. Impedance takes into account both resistance and reactance (the opposition caused by capacitance and inductance).
Impedance affects the flow of current in an AC circuit. A higher impedance means there is more opposition to the flow of current, which can lead to decreased performance and efficiency in the circuit.
Yes, impedance can be zero in an AC circuit if the circuit contains only resistive components. This means that there is no reactance present, so the impedance is equal to the resistance of the circuit.
