Question

Pls help:)
How to derive the ratio of output and input voltage in low pass, high pass and band pass RC filters

Answer 1

@timo86m

Answer 2

@wio

Answer 3

@ganeshie8

Answer 4

@e.mccormick

Answer 5

@ikram002p

Answer 6

I have derived the ration for all three filters. what i want to knw nw is hw to find the band width theoretically. we need to get a quadratic equation in omega and find it. then using
omega=2*pi*f we need to find f.

this is vat I hav nw. I dnt knw how to get that quadratic equation