In an $A.C.$ circuit, a resistance $R$ is connected in series with an inductance $L$. If the phase angle between voltage and current is $45^\circ$, the value of inductive reactance will be $(\sin 45^\circ = 1/\sqrt{2} = \cos 45^\circ)$.
- A$2R$
- B$R$
- C$\sqrt{2}R$
- D$R/\sqrt{2}$
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