A 100 mH inductor, a `20 muF` capacitor and a 10 ohm resistor are connected in series to a `100 V, 50 Hz` a.c. source. Calculate : (i) Inpendance of the circuit at resonance (ii) Current at resonance (iii) Resonant frequency.

A 31.4Omega resistor and 0.1H inductor are connected in series to a 200V, 50Hz ac source. Calculate (i) the current in the circuit

A 40 ohm resistor, 3 mH inductor and 2 mu F capacitor are connected in series to a 110 V, 5000 Hz a.c. source. Calculate the value of current in the circuit.

A (9)/(100pi) H inductor and a 12ohm resitance are connected in series to a 225V, 50Hz ac source. Calculate the current in the circuit and the phase angle betweent the current and the source voltage.

A 9//100 (pi) inductor and a 12 Omega resistanace are connected in series to a 225 V, 50 Hz ac source. Calculate the current in the circuit and the phase angle between the current and the source voltage.

A capacitor, a 101.5 mH inductor and a 5 ohm resistor are connected in series with a 50 Hz a.c. source. If current and voltage in the circuit are in phase, what is the capacity of the condenser ?

An inductor 200 mH, capactior 500 mu F , resistor 10 ohm are connected in series with a 100 V, varialbe frequency a.c. source. Calculate (i) frequency at which power factor of the circuit is unity (ii) current amplitude at this frequency (iii) Q factor.

A 100Omega resistance, a 0.1 muF capacitor and an inductor are connected in series across a 250 V supply at variable frequency. Calculate the value of inductance of inductor at which resonance will occur. Given the resonant frequency is 60 Hz.

A capacitor, a resistor and a 40 mH inductor are connected in series to an a.c. source of frequency 60 Hz. Calculate the capacitance of the capacitor,if current is in phase with the voltage.