Question

H9P1 - d
Somehow I am stuck on that question. I got all others correct, but here my answer is not accepted.
With these values:
L=175.0H, C=2.32mF,
A=2/π=0.64 at t=1.0s and
at t=0 the state is: vC(0)=0.0 and iL(0)=1.0

I should get iL(t) = A(0) * cos(2*pi*f*t)
A(0) = 1 and f = 0.2497796857 Hz
so iL(1.0-) = 1 * cos(2*pi*0.2497796857*1.0) = 0.001384275130626 but the answer is wrong! Why??

Answer 1

ok, got it: 0