A 12 Omega resistor and a 0.21 H inducto...

A 12 `Omega` resistor and a 0.21 H inductor are connected in series to an a.c. source operating at V, 50 cycle second. The phase angle between current and source vottage is

30degree

`tan^-1(5.5)`

`tan^-2(2)`

60degree

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