For an LCR series circuit with an ac source of angular frequency omega .
The resonance frequency of a certain RLC series circuit is omega_(0) . A source of angular frequency 2 omega_(0) is inserted into the circuit. After transients die out, the angular frequency of current oscillation is
In a series LCR circuit, operated with an ac of angular frequency omega , the total impedance is
In a series LCR circuit with an ac source of 50 V,R=300 Omega ,frequency v=50/piHz .The average electric field energy, stored in the capacitor and average magnetic energy stored in the coil are 25 mJ and 5 mJ respectively.The RMS current in the circuit is 0.10 A .Then find
A series combination of resistor (R), capacitor (C) is connected to an AC source of angular frequency omega . Keeping the voltage same, If the frequency is changed to Omega/3 , the current becomes half of the original current. Then, the ratio of the capacitance reactance and resistance at the former frequency is
The following series L-C-R circuit , when driven by an emf source of angular frequency 70 kilo-radians per second , the circuit effectively behaves like
In series LCR circuit at resonance
A given LCR series circuit satisfes the condition for resonance with a given AC source. If the angular frequency of the AC source is increased by 100% then in order to establish resonance, and without changing the value of inductance, capacitance must be
A given LCR series circuit satisfes the condition for resonance with a given AC source. If the angular frequency of the AC source is increased by 100% then in order to establish resonance, and without changing the value of inductance, capacitance must be
In a series LCR circuit connected to an ac source of variable frequency and voltage v =v_(m) sin omega t, draw a plot showing the variation of current (I) with angular frequency (omega) for two different values of resistance R_(1) and R_(2) (R_(1) gt R_(2)) . Write the condition under which the phenomenon of resonance occurs. For which value of the resistance out of the two curves, a sharper resonance is produced ? Define Q-factor of the circuit and give its significance.
