Question

In LC circuit the inductance L = 40 mH and capacitance C = 100 µF. If a voltage V(t) = 10sin(314 t) is applied to the circuit, the current in the circuit is given as :

(1) 0.52 cos 314 t

(2) 0.52 sin 314 t

(3) 10 cos 314 t

(4) 5.2 cos 314 t

Answer 1

Answer is (1) 0.52 cos 314 t

Phasor

Answer 2

Answer is (1) 0.52 cos 314 t

R = 0

Z = X_C – X_L

i = 0.52 cos (314t)