From the following electrical circuit the three voltage sources are. Determine the current or voltage flowing at the specified locations. (a) Determine the current in each resistor, i1, i2, i3, i4, i5, and i6.  (b) Determine the voltage at terminal AB, i.e. VAB R1= 40 ohm R2= 36 ohm R3= 34 ohm R4= 12 ohm R5= 12 ohm R6= 20 ohm V1= 12 volt V2= 6 volt V3= 6 volt

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Z parameter

The Z-parameters that are the impedance parameters of a two-port network are defined by expressing the two-port voltages V1 and V2 in terms of two-port currents I1 and I2. The Z-parameters are calculated by open circuiting one of the two ports at a time henceforth they are called open-circuit impedance parameters.