Lesson: Impedance and Power of Alternating-Current Circuits
In this lesson, we will learn how to calculate the impedance of RLC alternating current circuits and how phase angle depends on impedance and frequency.
Sample Question Videos
Worksheet: 9 Questions • 1 Video
What is the total impedance of the circuit?
What is the phase angle between the current and the emf in the circuit?
What is the impedance of the circuit?
What is the amplitude of the current in the circuit?
What is the phase constant of the current?
How much energy is dissipated by the resistor in 2.5 s?
An alternating current generator is connected to a device whose internal circuits are not known. We only know current and voltage outside the device, as shown in the diagram. What is the power dissipated by the circuit?