Explain and define the difference between resistance,reactance and impedence
Answers
Answer:
DEFINITION :
Impedance is a more general term for resistance that also includes reactance. In other words, resistance is the opposition to a steady electric current. ... Reactance, however, is a measure of the type of opposition to AC electricity due to capacitance or inductance. This opposition varies with frequency.
Difference :
Resistance is the measure of opposition to the current flow offered by the material.Usually denoted by R.
Reactance is the resistance offered to the ac currents by inductors and capacitors only. Usually denoted by X.
For capacitors X=1/(2πfC); where f is the frequency,C is the capacitance.
For inductors X= 2πfL; where f is the frequency,:L is the inductance.
Impedance is the sum of the resistance and reactance of a circuit
denoted by Z=R+jX (for primarily inductive cirucits) or Z=R-jX (for primarily capacitive circuits).
where j=√(-1).
Explanation: