An LCR series circuit its connected to a source of A.C. at resonance, the applied voltage and the current flowing through the circuit will have a phase difference of
Answer & explanation
Correct answer: option 4
At Resonance $ X_C = X_L$
$\Rightarrow Z = R , Cos\phi = \frac{R}{Z} = 1 = Cos0$
$ \phi = 0$