Electromagnetic Waves: EM Wave

1. Jul 12, 2009

OsDaJu

AC Circuits II: AC Power Generator

1. The problem statement, all variables and given/known data

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?

2. Relevant 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

3. 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.

Xc=457.34
Vrms=110
Z=4.17×10^2

Last edited: Jul 12, 2009
2. Jul 12, 2009

hage567

The equation you were given is for the electric field, though. Part B is asking about the magnetic field.

3. Jul 12, 2009

OsDaJu

Thanks, I didn't see that one. I changed the forum to a different question. Do you think you can help me with this one?

4. Jul 12, 2009

LowlyPion

If you have a further related question, then just add it.

If it's different then start a new thread. Otherwise, people may not pick up on the fact that your new question requires attention.

5. Jul 12, 2009