Question

An ac source of voltage V = V0 sin wt 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 capacitance,

a resistor of 100 W and an inductor of self

inductance L = (4/p2

) 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 ows in the circuit when the current

is in phase with the voltage.

Answer 1

Answer:

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