An LCR circuit has `L = 10 mH, R = 3 Omega and C = 1 mu F` and is connected in series to a source of `(15 cos omega t)` volt. Calculate the current amplitude at a frequency 10 % lower than the resonance frequency of the circuit.

A series LCR circuit with R = 20Omega (Ohm), L = 1,5H (Henry) and C= 35muF (Micro farad) is connected to a variable frequency 200 V (Volt) a.c. supply. When the frequency of the supply equals the natural frequency of the circuit, what is the average power transferred to the circuit in one complete cycle ?

A series LCR-circuit having L = 10 mH, C = (400//pi^2)muF and R = 55 ohm is connected to a 220 V variable frequency a.c. supply. Calculate the value of maximum current amplitude.

An inductor 200 mH, capacitor 500muF , resistor 10Omega are connected in series with a 100V, variable frequency a.c. source. Calculate the current amplitude at resonance .

A 100 mH inductor a 25muF capacitor and a 15 ohm resistor are connected in series to a 120 V. 50 Hz a.c. source. Calculate resonant frequency.

A series LCR circuit with R= 20 Omega ,L=1.5H and C = 35 muF is connected to a variable-frequency 200 V ac supply. When the frequency of the supply equals the natural frequency of the circuit, what is the average power transferred to the circuit in one complete cycle?

A series LCR circuit with L=0.12H, C = 480 nF, R= 23 Omega is connected to a 230 V variable frequency supply. For which frequencies of the source is the power transferred to the circuit half the power at resonant frequency? What is the current amplitude at these frequencies?