If Vs $=20+$ j $0$ V$,$ R $=10$ W$,$ and X $=20$ W$,$ the phasor current I$0($in amperes$)$ is

$1.2-$ j

$2$

$2.2+$ j

$2$

$3.-1+$

j

$4.-1-$ j

$5.0$

$49.$ If Vs $=5+$ j $0$ V$,$ R $=20$ W$,$ and X $=-20$ W$,$ the phasor voltage V$0($in volts$)$ is

$1.0-$ j

$10$

$2.0+$ j

$10$

$3.-5+$ j

$0$

$4.5+$ j $0$

$5.0$

$50.$ If vs$($t$)=2$ cos$(4$ t$)$ V$,$ R $=20$ W$,$ and C $=0\mathrm{.}025$ F$,$ the forced response for the voltage v$0($t$)$ is

$1.8$ cos$(4$ t $+$

$180$o$)$

$2.8$ cos$(4$ t$)$

$3.8$ cos$(4$ t $+90$o$)$

$4.8$ cos$(4$ t $-90$o$)$

$5.0$

End of Questions on AC Circuits