Question

For the LCR series circuit shown here, the peak value of the voltage of the source, the phase difference between the applied voltage and the current flowing, and the power factor of the circuit, equal, respectively.

(1) √175 volt ; + π/3 ; 1/2 

(2) √175 volt ; - π/3 ; 1/2

(3) 10 volt; 0° ; 1

(4) √200 volt ; π/4 ; 1/√2

Answer 1

(3) 10 volt; 0° ; 1

The impedance, z, of the circuit is given by

Phase difference between current and voltage