Alternating Cur...

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

When the frequency of applied emf in an LCR series circuit is less than the resonant frequency,then the nature of the circuit will be:
a) Capacitive     b) resistive      c) inductive

Figure shows a series LCR circuit connected to a variable frequency 200V source. The source frequency which drives the circuit at resonance is

A 100$$\Omega $$ resistance is connected in series with a 4H inductor. The voltage across the resistor is $$V_{R}=2sin(1000t)V$$. The voltage across the inductor is:

A condenser of 10 $$\mu$$F and an inductor of 1H are connected in series with an A.C. source of frequency 50Hz. The impedance of the combination will be (take $$\pi^{2}$$ $$=$$10 ):

In an L-C-R series circuit, $$R=\sqrt{5}\Omega ,X_{L}=9\Omega ,X_{C}=7\Omega $$. If applied voltage in the circuit is 50V then impedance of the circuit in ohm will be

A coil of inductance 0.1H is connected to 50V, 100Hz generator and current is found to be 0.5A. The potential difference across resistance of the coil is

In an LR circuit, R $$=$$ 10 $$\Omega $$ and L $$=$$ 2H. If an alternating voltage of 120V and 60Hz is connected in this circuit, then the value of current flowing in it will be _______ A (nearly)

A 220V, 50Hz a.c. generator is connected to an inductor and a 50$$\Omega $$ resistance in series. The current in the circuit is 1.0A. The P.D. across the inductor is:

A circuit operating at $$\dfrac{360}{2\pi }$$ Hz $$\Omega $$ contains a 1 F $$\mu $$ capacitor and a 20 resistor. The inductor must be added in series to make the phase angle for the circuit zero is