Lesson: Impedance of Alternating Current CircuitsPhysics
In this lesson, we will learn how to calculate the impedance of simple resistive-capacitive-inductive circuits, using capacitive and inductive reactances.
Sample Question Videos
An alternating voltage source with a frequency of 50 Hz is connected to a 125 µF capacitor. What is the reactance of the capacitor? Give your answer to two significant figures.
The reactance of the capacitor needed in an alternating current circuit is 120 Ω. The capacitor to be used has a 75 µF capacitance. What frequency must the alternating current have? Give your answer to the nearest hertz.
An alternating voltage source with a frequency of 75 Hz is connected to a 35 mH inductor. What is the reactance of the circuit?