In alternating current circuits, the a.c. meters measure

In an a.c circuit, the a.c. metres measures?

Derive a relation for the average power of an alternating current circuit containing LCR in series.How true power differ from virtual power in a.c. circuit.

The equation of alternating current for a circuit is given by I = 50 cos 100 pit find frequency of a.c. applied

In an a.c. circuit, the current

An ac ammeter is used to measure currnet in a circuit. When a given direct current passes through the circuit. The ac ammeter reads 3 A. When another alternating current passes through the circuit, the ac ammeter reads 4A. Then find the reading of this ammeter (inA), if dc and ac flow through the circuit simultaneously.