Question

Applied $AC$ voltage is given as:
$V=V_0\sin \omega t$
Corresponding to this voltage match the following two columns.

Answer 1

For (A) Since current is in same phase therefore, circuit is purely R or it can be an L-C-R circuit in Resonance.therefore, 1 and 4
For (B) $I-I_o\cos \left(\omega t\right)=I_o\sin (\omega t-\pi /2)$
therefore, current is lagging behind by $\pi /2$ therefore, its only inductance circuit.therefore, only 2.
For (C) Current is leading voltage but not by $\pi /2$ therefore, it is not pure capacitance its R-C circuit or L-C-R circuit therefore, 3 & 4
For(D)Current is lagging but not by $\pi /2$ therefore, it is not pure inductance. It is L-R circuit or L-C-R circuit therefore, 4