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RLC Circuits and Resonance

Q1:

The phase angle is ______ in the given circuit.

A 34.5°

B 43.3°

C 46.7°

D 55.5°

ANS:C - 46.7°

-tan inv((Il-Ic)/Ir) is the formula to find the phase angle.

Il=V/Xl;
Ic=V/Xc;
Ir=V/R.

Xl= 2*π*f*L ;
Xc = 1/(2*π*f*C);
So, -tan inv((Il-Ic)/Ir) = 46.7° is the answer.



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