impedance at resonance

Thread Starter

cmp46

Joined Jan 4, 2014
4
Hi I am new to electric circuits and everything but I have a test coming up that covers this.

In a series AC circuit, XL = 2350 ohms, C = 0.005 µF, and R = 500 Ω. What is the
impedance at resonance?

I would just really like to know how to solve this. Thank you!
 

crutschow

Joined Mar 14, 2008
34,282
At resonance the capacitive reactance cancels the inductive reactance so the only impedance left is the resistance, as noted by the previous posters.
 

Thread Starter

cmp46

Joined Jan 4, 2014
4
well I also need help with two more questions:

A 10 mH coil has a resistance of 100 ohms. At what frequency does XL = R ?

When observing a 500 KHz square wave with an oscilloscope, what period would you expect to see? (For a full cycle)
 

shteii01

Joined Feb 19, 2010
4,644
I am sorry. I just don't even know how to work those problems out. I have been searching for information and I am still lost so I thought it would be better to ask people who know for an explanation.
No offense, but not being able to figure out wave period in the Age of Google is kinda pathetic.
 
Last edited:

bountyhunter

Joined Sep 7, 2009
2,512
I am sorry. I just don't even know how to work those problems out. I have been searching for information and I am still lost so I thought it would be better to ask people who know for an explanation.
When I was in school, the teacher was supposed to know.....

or use Google as somebody else suggested.
 
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