
#1
Feb2412, 07:39 PM

P: 126

1. The problem statement, all variables and given/known data
Find the voltage drop across a resistor and capacitor in parallel. I am trying to understand how to deal with this using complex numbers. I may have a completely wrong notion of complex impedance. I thought I could treat the complex impedance like resistance, then take the modulus or real part (I believe I know the math, but not which to apply). I= 100 milli Amps R= 1000 ohms C= 0.001Farads freq.= 60Hz=377rad/s 2. Relevant equations Z_c=1/(i*omega*C) R_eq= (R*Z_C)/(R+Z_C) 3. The attempt at a solution Do I apply the standard resistors in parallel formula then take the real part of the modulus? Or do I have a completely wrong conception on complex impedance. 



#2
Feb2412, 11:34 PM

Mentor
P: 11,409





#3
Feb2612, 10:34 AM

P: 126

To be sure I fully understand, by magnitude you mean take the square root of (my complex quantity * its complex conjugate) ?




#4
Feb2612, 10:40 AM

Mentor
P: 11,409

Voltage drop across paralell resistor and capacitor 


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