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pokie_panda
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Homework Statement
The load (Z) in the circuit below absorbs a complex power of 54+j46 VA when the voltage across it is 3cos(400t+-60)V. Use this information to determine the impedance of the load
Homework Equations
P = V^2 / Z
The Attempt at a Solution
first convert V to polar form
3 < -60
convert power to polar form
70.9<40.4
Apply the formula
V^2/P= 9<-120/70.9<-40.4
=.1268<-160.4
convert to rectangular
Z=-0.11947- j0.04248 ohms
I'm not sure if the answer is correct