Alternating Cur...

In a LCR circuit having $$ L = 8.0 $$  henry, $$ C = 0.5 \mu F $$ and $$ R = 100$$ ohm in series. The resonance frequency in per second is

The natural frequency of a $$ L-C $$  circuit is equal to

The frequency for which a $$ 5 \mu F $$ capacitor has a reactance of $$ \dfrac{1}{1000} $$ ohm is given by

In a circuit containing an inductance of zero resistance, the e.m.f. of the applied ac voltage leads the current by

If an $$ 8\, \Omega $$  resistance and $$ 6 \, \Omega $$  reactance are present in an ac series circuit then the impedance of the circuit will be

In a pure inductive circuit or In an ac circuit containing inductance only, the current

In pure inductive circuit, the curves between frequency f and reciprocal of inductive reactance $$ 1/ X_L $$ is

An oscillator circuit consists of an inductance of $$0.5 \,mH$$ and a capacitor of $$20 \mu F$$. The resonant frequency of the circuit is nearly

Which of the following curves correctly represents the variation of capacitive reactance $$ X_C $$  with frequency f

The instantaneous values of current and emf in an ac circuit are $$ I = \dfrac{1}{\sqrt{2}} \, sin \, 314 t $$ amp and $$ E = \sqrt{2}  sin(314 t - \pi / 6)V $$ respectively. The phase difference between E and I will be