Question

RC and RL low pass filters?

Answer 1

I'm working on the attached question and a little bit confused on what to do?

Answer 2

all I did was this for the RC

\[\frac{v_0}{v_i}=\frac{Z_C}{Z_R+Z_C}\]\[\frac{v_0}{v_i}=\frac{-j\frac{1}{\omega C}}{R-j\frac{1}{\omega C}}\]\[\frac{v_0}{v_i}=\frac{1}{1+j\omega CR}\]

Answer 3

then drew the RL like this