## College Physics (7th Edition)

$1.2\,\mu F$
For the parallel connection, $C_{p}=C_{1}+C_{2}+C_{3}$ $\implies C_{1}=C_{p}-C_{2}-C_{3}=1.7\,\mu F-0.30\,\mu F-0.20\,\mu F$ $=1.2\,\mu F$