Chapter 3.7, Problem 13P

In Problems 11 through 16, the parameters of an RLC circuit with input voltage E(t) are given. Substitute $I_{\text{sp}}\left(t\right)=A\cos \omega t+B\sin \omega t$ in Eq. (4), using the appropriate value of $\omega$, to find the steady periodic current in the form $I_{\text{sp}}\left(t\right)=I_{\text{0}}\sin \left(\omega t-\delta \right)$ .

$R=20\Omega ,L=10\text{H},C=0.01\text{F;}E\left(t\right)=200\cos 5t\text{V}$