Power In Ac Circuit Class 12. In an alternating circuit current and voltage both vary with time so the work done by the source in time interval dt is given by. This is the main reason why we cannot calculate the power for the same as power is equal to the product of voltage and time.
Introduce power factor cos fi. Power in an ac circuit. Give its 4 cases.
In resistive ac circuit there will be only resistors and no other circuit elements will be present.
Its si unit is ohm. Give its 4 cases. The opposition offered by an ac circuit containing more than one out of three components l c and r is called impedance z of the circuit. As we know that in an alternating current circuit both electromotive force and current change continuously with respect to time.
