An ac generator with emf $=$m sin d t$,$ where

$$m $=25\mathrm{.}0$ V and d $=377$ rad$/$s$,$ is connected to a $4\mathrm{.}15$ F capac$-$

itor. $($a$)$ What is the maximum value of the current? $($b$)$ When

the current is a maximum, what is the emf of the generator?

$($c$)$ When the emf of the generator is $12\mathrm{.}5$ V and increasing in

magnitude, what is the current?