An ac source of voltage `V = V_ 0sin omegat` is connected to a series combination of L, C and R. Use the phasor diagram to obtain expressions for impedance of the circuit and phase with the voltage. What is circuit in this condition called?

(i) An a.c. source of voltage V=V_(m) sin omega t is connected to a series combination of L, C and R. Use the phasor diagram to obtain expressions for impedance of the circuit and phase angle between voltage and current. Find the condition when current will be in phase with the voltage. What is the circuit in this condition called ? (ii) In a series LR circuit X_(L) =R and power factor of the circuit is P_(1) . When capacitor with capacitance C such that X_(L) = X_( C) is put in series, the power factor becomes P_(2) . Calculate P_(1)//P_(2)

(i) An a.c. Source of voltage V = V_(0) " sin " omegat is connected to a series combination of L,C and R . Use the phasor diagram to obtain expression for impedance of the circuit and phase angle between voltage and current . Find the condition when current will be phase with the voltage . What is the circuit in this condition called ? (ii) In a series LR circuit X_(L) = R and power factor of the circuit is P_(1) . When capacitor which capacitance C such that X_(L) =X_(C) is put in series , the power factor becomes P_(2) .Calculate P_(1)//P_(2)

(a) An AC source of voltage V = V_(0) sin omegat is connected across a series combination of an inductor a capacitor and a resistor . Use the phasor diagram to obtain the expression for the impedance of the circuit and phase angle between the voltage and the current. (b) A capacitor of unknown capacitance a resistor of 100 Omega and an inductor of self - inductance L = (4 //pi^(2)) henry are in series connected to an AC source of 200 V and 50 Hz . Calculate the value of the capacitance and the current that flows in the circuit when the current is in phase with the voltage .

A source of a.c. voltage V = V_(m) sin omega t is connected to a series combination of a capacitor C and a resistor R. Draw the phasor diagram and use it to obtain the expression for (i) impedance of the circuit, and (ii) phase angle.

(a) An a.c. source of voltage V=V_(m) sin omega t is connected across a series combination of an inductor, a capacitor and a resistor. Use the phasor diagram to obtain the expression for (i) impedance of the circuit, and (ii) phase angle between the voltage and the current (b) A capacitor of unknown capacitor, a resistor of 100 Omega and an inductor of self-inductance L = 4/pi^(2) H are connected in series to an a.c. source of 200 V and 50 Hz. Calculate the value of the capacitance and the current that flows in the circuit when the current is in phase with the voltage.

With the help of a phasor diagram find an expression for impedance (Z) in a series L-C-R circuit.

An a.c. source, of voltage V =V_(m) sin omega t , is applied across a series LCR circuit. Draw the phasor diagram for the circuit when the (i) capacitive reactance exceeds the inductive reactance, (ii) inductive reactance exceeds the capacitive reactance.

Draw the phasor diagram for a series RC circuit connected to an a.c. source.

a) Derive the expression for the current flowing in an ideal capacitor and its reactance when connected to an ac source of voltage V=V_0sin omegat b) Draw its phasor diagram. c) If resistance is added in series to capacitor what changes will occur in the current flowing in the circuit and phase angle between voltage and current.