$4\mathrm{.}63$ a$)$ Use source transformations to find v$\_($o$)$ in the circuit in Fig. P$4\mathrm{.}63.$

b$)$ Find the power developed by the $340$ V source.

c$)$ Find the power developed by the $5$ A current

source.

d$)$ Verify that the total power developed equals the

total power dissipated.