- #1
jakeowens
- 34
- 0
A L-R-C series circuit contains a 1x10^-6 F capacitor, a 7.00 mH coil and a 90 ohm resistor. What is its resonant frequency?
For this one I used the formula for capacitive reactance.
Xc=1/2pi*fC
After doing some algebra i isolated the frequency giving me :
f=(1/Xc)/2pi*C.
So i substitute all my values giving me:
f=(1/90)/2pi*1x10-6F...
The answer i get seems really wrong. Did I use the wrong formula?
Should i have used XL=2pi*fL?
I'm really at a loss for what to do with this problem
any help would be appreciated
For this one I used the formula for capacitive reactance.
Xc=1/2pi*fC
After doing some algebra i isolated the frequency giving me :
f=(1/Xc)/2pi*C.
So i substitute all my values giving me:
f=(1/90)/2pi*1x10-6F...
The answer i get seems really wrong. Did I use the wrong formula?
Should i have used XL=2pi*fL?
I'm really at a loss for what to do with this problem
any help would be appreciated