Chapter 5, Problem 17P

An RC circuit is subjected to an alternating voltage source $V$ as shown in Fig. 5.17. The relationship between the voltage and current is $V=IZ$, where $Z=R-j{X}_c$. For a particular design,

$R=4\Omega$ and $X_c=4\Omega$  .

1. Find $I$
2. if $V=120\angle 30°V$.
3. Find $V$
4. if $I=7.0\angle 45°A$.

FgueP5.17 RC circuit subjected to an alternating voltage source for problem P5-17.