In a circuit containing capacitance only
current leads e.m.f. by `pi//3`
current lags behind e.m.f. by `pi//2`
both are in phase
current leads e.m.f. by `pi//4`
in a pure capacitive circuit the current leads the voltage by a phase angle of 90 degree by here how is it that the answer is 45 degree the fact is in capacitive circuit current leads voltage so why cannot it be 60 degrees then?