Currents and Phase relation in AC circuit with L, R, and C.

AI Thread Summary
The circuit analysis involves determining the currents I1, I2, and I3 based on a 100-volt voltage source producing a waveform of 100 cos(120 pi t) volts. To solve the problem, it is essential to convert all impedances and the voltage source into phasors, using complex numbers for analysis. The impedance of the inductor (Z_L) is represented as jωL, where j is the imaginary unit and ω is the angular frequency. Understanding the phase relationship between the applied voltage and current I3 is also crucial. This approach will provide clarity on the current values and their phase relations in the AC circuit.
risendemon
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Homework Statement



The voltmeter in the circuit sketched in the link below reads 100 volts. What currents would ammeters indicate for I1, I2, and I3? What is the phase relation between the applied voltage and I3?

http://i43.photobucket.com/albums/e394/risendemonx/prob3pic.jpg


Homework Equations



This is what I need help with, actually...

The Attempt at a Solution



So, I don't really want help in solving the problem, I just need a push in the right direction. Mostly something along the lines of what equations I need, or how to start going about looking at this problem. Anything at all will help me immensely

thanks a bunch!
 
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Here's a hint: The voltage source produces a waveform of 100 cos(120 pi t) volts.

- Warren
 
need to convert all impedances and source into phasors (complex number) first and do the usual circuit analysis with complex numbers.

eg: Z_L = j \omega L where j=\sqrt{-1} and \omega is angular frequency.
 
thanks so much both of you for your help! :-)
 
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