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Voltage from current across impedance 
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#1
Apr1608, 08:47 PM

P: 8

So the power is S=VI*=ZI^2.
the question is whether V=ZI* or just ZI. Using V=ZI when I calculate the voltage i get a negative answer. Thanks! 


#2
Apr1608, 11:29 PM

P: 1,011




#3
Apr1708, 11:30 AM

Mentor
P: 41,303

Why would V = ZI* ? Once you have the complex Z and I, the complex V should just be the product of those two. There are times that you use the complex conjugate of a quantity, but I wouldn't think you would use it here.... 


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