- #1
Sean1218
- 86
- 0
Homework Statement
A circuit contains two elements, but it is not known if they are L, R or C. The current in this circuit when connected to a 51.0 V, 60.0 Hz source is 3.60 A and leads the voltage by 75.0 degrees.
What is the impedance of this circuit?
Homework Equations
Z=sqrt(R^2 + (Xc)^2)
tan(phi)=Xc/R
Xc=1/(2pifC)
I=E/Z
The Attempt at a Solution
I figured it contains R and C because current leads voltage, so there's no Xl.
For a) Z = sqrt(R^2 + (Xc)^2), and I tried tan(phi) = Xc/R to get C for Xc = 1/(2pifC), but didn't get right answer, using phi = -75.0 degrees.
Any help?
Last edited: