Chapter 22, Problem 19P

For the R-C low-pass filter in Fig. 22.105:

1. Sketch $A_v=V_o/V_i$
2. versus frequency using a log scale for the frequency axis. Determine

$A_v=V_o/V_i\text{at }0.l{f}_c,0.5f_c,2f_{c}and10f_c.$

1. Sketch the phase plot of $\text{θ}$
2. versus frequency, where $\text{θ}$
3. is the angle by which ${\text{V}}_{\text{o}}{\text{ leads V}}_{\text{i}}\text{.}$

Determine $\text{θ}$ at $f=0.1f_c,0.5f_c,f_c,2f_c,$ and $10f_c.$