AC Circuits II: AC Power Generator

AI Thread Summary
The discussion revolves around solving a homework problem related to an AC circuit with a generator, inductor, capacitor, and resistor. Key calculations include determining the circuit's impedance, rms current, average power, peak current, and peak voltages across the inductor and capacitor. The participant is specifically seeking assistance with calculating the peak voltages for parts E and F, having encountered errors in their previous attempts. They have calculated the capacitive reactance and the rms voltage but are unsure about the relationship between peak and rms voltage. Clarification on these calculations and the resonance frequency is also requested.
OsDaJu
Messages
17
Reaction score
0

Homework Statement



A An AC generator supplies an rms voltage of 110 V at 60.0 Hz. It is connected in series with a 0.300 H inductor, a 5.80 μF capacitor and a 236 Ω resistor.
What is the impedance of the circuit?

B What is the rms current through the resistor?

C What is the average power dissipated in the circuit?

D What is the peak current through the resistor?

E What is the peak voltage across the inductor?

F What is the peak voltage across the capacitor?

G The generator frequency is now changed so that the circuit is in resonance. What is that new (resonance) frequency?

Homework Equations



Z=[R^2+(XL-Xc)^2]^(1/2)
XL=2pifL
Xc=1/(2pifc)

Part E: VL=[(2^.5)*Vrms]/Z
Part F: VL=[(2^.5)*Vrms]/Xc

The Attempt at a Solution



I need help for part E and F

I substituted the numbers in the equation and I got the wrong answer. Can someone point me in the right direction?

Xc=457.34
Vrms=110
Z=4.17×10^2
 
Last edited:
Physics news on Phys.org
Vrms across C = Irms* Xc
Now what is the relation between peak voltage and rms voltage?
 
Thank you!
 
Thread 'Collision of a bullet on a rod-string system: query'
In this question, I have a question. I am NOT trying to solve it, but it is just a conceptual question. Consider the point on the rod, which connects the string and the rod. My question: just before and after the collision, is ANGULAR momentum CONSERVED about this point? Lets call the point which connects the string and rod as P. Why am I asking this? : it is clear from the scenario that the point of concern, which connects the string and the rod, moves in a circular path due to the string...
Back
Top