In an electrical circuit `R,L,C` and an `AC` voltage source are all connected in series. When `L` is removed from the circuit, the phase difference between the voltage and the current in the circuit is `pi//3`. If instead, `C` is removed from the circuit, difference the phase difference is again `pi//3`. The power factor of the circuit isA. `1//2`B. `1//sqrt(2)`C. 1D. `sqrt(3)//2`

In an electrical circuit `R,L,C` and an `AC` voltage source are all co

1.	In an electrical circuit `R,L,C` and an `AC` voltage source are all connected in series. When `L` is removed from the circuit, the phase difference between the voltage and the current in the circuit is `pi//3`. If instead, `C` is removed from the circuit, difference the phase difference is again `pi//3`. The power factor of the circuit isA. `1//2`B. `1//sqrt(2)`C. 1D. `sqrt(3)//2`
Answer» Correct Answer - C Here, phase difference, `tanphi = (X_(L)-X_(C))/R` `tan pi/3 = (X_(L)-X_(C))/R` When L is removed, `sqrt(3) = X_(C)/R rArr X_(C) = sqrt(3)R` When C is removed, `tanpi/3 = sqrt(3) = X_(L)/R` `X_(L) = Rsqrt(3)` Hence, in resonant

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