- #1
pyroknife
- 611
- 4
I attached the link to the problem. Shouldn't the Vlmax be 330V? I tried entering that and it wasn't accepting my answer.
Click For Summary
Homework Help Overview
The discussion revolves around finding the peak electromotive force (emf) in an AC circuit involving a resistor and inductor. Participants are exploring the relationship between peak voltage and RMS voltage in the context of alternating current sources.
Discussion Character
- Exploratory, Conceptual clarification, Problem interpretation
Approaches and Questions Raised
- Participants are questioning the definition of peak voltage and its relationship to RMS voltage, with some suggesting that the peak voltage should be 330V. Others are discussing the implications of circuit components on voltage measurements.
Discussion Status
The discussion is active, with participants clarifying concepts related to peak and RMS voltage. There are differing interpretations regarding the peak voltage in relation to the circuit setup, and some guidance has been offered regarding the effects of the inductor's reactance.
Contextual Notes
There is a mention of a link to the problem that was initially missing, which may have contributed to confusion. The discussion also highlights the need to consider the voltage divider effect in a series circuit.
- #2
sandy.bridge
- 797
- 1
Where is the link?
- #3
- #4
sandy.bridge
- 797
- 1
When dealing with ac sources you want to be dealing with the rms voltage.
[tex]V_{peak}=\sqrt{2}V_{rms}[/tex]
[tex]V_{peak}=\sqrt{2}V_{rms}[/tex]
- #5
pyroknife
- 611
- 4
sandy.bridge said:
Well that's the 2nd part of part b where it asks for the rms Voltage. The 1st part is asking for the peak. I thought the peak was defined by emf=emfpeak * cos(wt+weird symbol) and in this case wouldn't emf peak just be 330V?
- #6
gneill
Mentor
- 20,989
- 2,934
You have a series circuit (resistor and inductor), so it's a voltage divider. The peak voltage across either component must be less than the voltage supply's peak. You'll have to deal with the reactance of the inductor (or its impedance if you're familiar with that).
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