In an electrical circuit, R, L, C and AC voltage source are all connected in series. When L is removed from the circuit, the phase difference between the voltage and current in the circuit is \(\frac { 1 }{ 2 }\). Instead, if C is removed from the circuit, the phase difference is again \(\frac { π }{ 3 }\). The power factor of the circuit is- (NEET 2012)
A. \(\frac { 1 }{ 2 }\)
B. \(\frac { 1 }{ √ 2 }\)
C. 1
D. \(\frac { √ 3 }{ 2 }\)
Answer:C
In an electrical circuit, R, L, C and AC voltage source are all connected in series. When L is removed from the circuit, the phase difference between the voltage and current in the circuit is \(\frac { 1 }{ 2 }\). Instead, if C is removed from the circuit, the phase difference is again \(\frac { π }{ 3 }\). The power factor of the circuit is- (NEET 2012)
A. \(\frac { 1 }{ 2 }\) B. \(\frac { 1 }{ √ 2 }\) C. 1 D. \(\frac { √ 3 }{ 2 }\)