$10\mathrm{.}20($a$)$ Determine $s$ on the transmission line of Figure $10\mathrm{.}32.$ Note that the dielectric is air. $($b$)$ Find the input impedance. $($c$)$ If $L=10,$ find $I_s.$

$($d$)$ What value of $L$ will produce a maximum value for $|I_s|$ at $=1$Gra$\frac{d}{s}?$

For this value of $L,$ calculate the average power $(e)$ supplied by the source; $(f)$ delivered to $Z_L=40+j30.$

Figure $10\mathrm{.}32$ See Problem $10\mathrm{.}20.$