Capacitive reactance

  • Thread starter aurao2003
  • Start date
  • #1
126
0

Homework Statement


Now demonstrate how to calculate resonant frequency. Calculate the capacitive reactance for a 300uF capacitor in series with a 800mH inductor.




Homework Equations


f = 1/2pi(LC)^1/2
Xc = -1/2pifC

Hi
I urgently need this solution checked out for my BTech deadline. The question reads thus:





The Attempt at a Solution


where L = 800mH, C = 300uF

so,
f = 1/2pi(800 x 10^-3 x 300 x 10^-6)
So, f = 10.3 Hz

so, Xc =-1/2pi (10.27 x 300 x 10^-6)

Will my final answer be expressed as a negative?
Any suggestions will be appreciated.
Thanks a lot in advance.
 

Answers and Replies

  • #2
gneill
Mentor
20,840
2,814

Homework Statement


Now demonstrate how to calculate resonant frequency. Calculate the capacitive reactance for a 300uF capacitor in series with a 800mH inductor.




Homework Equations


f = 1/2pi(LC)^1/2
Xc = -1/2pifC

Hi
I urgently need this solution checked out for my BTech deadline. The question reads thus:





The Attempt at a Solution


where L = 800mH, C = 300uF

so,
f = 1/2pi(800 x 10^-3 x 300 x 10^-6)
So, f = 10.3 Hz

so, Xc =-1/2pi (10.27 x 300 x 10^-6)

Will my final answer be expressed as a negative?
Any suggestions will be appreciated.
Thanks a lot in advance.
Technically capacitive reactance is a negative reactance, so best to express it so. Also be sure to assign it the appropriate units! Everything should have units :wink:
 
  • #3
126
0
Technically capacitive reactance is a negative reactance, so best to express it so. Also be sure to assign it the appropriate units! Everything should have units :wink:
So, my final answer is in ohms and negative. Aside from that, is my working okay? I feel its fine but its the determinant for a distinction or a merit.

Thanks.
 
  • #4
126
0
be sure to assign it the appropriate unitshttp://www.infoocean.info/avatar2.jpg [Broken]
Thanks everyone. I take that as a yes! My sincere appreciation and gratitude.
 
Last edited by a moderator:

Related Threads on Capacitive reactance

Replies
11
Views
4K
Replies
3
Views
2K
Replies
4
Views
923
Replies
4
Views
2K
  • Last Post
Replies
1
Views
2K
Replies
1
Views
3K
  • Last Post
Replies
3
Views
1K
  • Last Post
Replies
0
Views
999
  • Last Post
Replies
2
Views
11K
Top