# Question: three electrical circuits having complex impedance z1 10...

###### Question details

Three electrical circuits having complex impedance z1 = 10 + 30i ohms, z2 = 20 + 0i ohms, and z3 = 1 − 20i ohms are connected in parallel across a 200 volt supply (i.e., the complex voltage is V = 200 + 0i volts). If the total complex current I amps in the network is given by I = V/z , where 1/z = 1/z1 + 1/z2 + 1/z3 . Find the complex current I and then find the actual current flowing in the network (i.e., |I| amps) and its phase angle (i.e. Arg(I) radians).