The ideal current source $i_s(t)$ in Figure P4.60 switches levels as shown. Determine and sketch the voltage $v_o(t)$ across the inductor for $0<t<2 \mathrm{~s}$. Assume the inductor current is zero before $t=0, R_S=500 \Omega$, and $L=50 \mathrm{H}$.
(FIGURE CAN'T COPY)
Figure P4.60