Alternating Cur...

In the R-C series A.C. circuit, current is by $$\delta $$ than voltage. 

An A.C. circuit consists of a resistance and a choke in series. The resistance is of $$220$$ $$\Omega$$ and choke is of $$0.7$$ henry. The power absorbed from $$220$$ volts and $$50$$ Hz, source connected with the circuit, is?

In the series LCR circuit, the voltmeter and ammeter readings are respectively.

An alternating emf is applied across a parallel combination of a resistance  $$R,$$  capacitance  $$C$$  and an inductance  $$L.$$  If  $$I _ { R } ,  I _ { L } , I _ { C }$$  are the currents through  $$R ,$$   $$L$$   and  $$C ,$$  respectively, then the diagram which correctly represents, the phase relationship among  $$I _ { R } ,  I _ { L } , I _ { C }$$  and source emf  $$E,$$  is given by

In an A.C circuit, a resistance of R ohm is connected in series with an indutance L.If phase angle between voltage and current be$${ 45 }^{ 0 }$$, the value of inductive reacatance  will be  

In the series LCR circuit (Fig. 7.33)  , the voltmeter and ammeter readings are : 

In a circuit, the phase of the current is lagging behind $$\pi /3$$ angle with phase of voltage. Element present in circuit are:

The alternating current is given by the equation $$i = 10\sin \left ( 100 \pi t + \dfrac{\pi}{6} \right ).$$ The current attains its first maximum at t is :

How can you decrease current in an alternating current circuit without any loss of power?

In a radio receiver, the short wave and medium wave station are tuned by using the same capacitor but coils of difference inductance $$L_s$$ and $$L_m$$ respectively then