So i have a circuit with three receivers whose impedances are ##Z_1 = (125 + j375)\ohm , Z_2 = (700 + j100)\ohm , Z_3 = (500 - j500)\ohm ## and with two current generators. Effective value of second generator is ## I_{g2}=40mA## while Ig1 is completely unknown. Apparent power of second receiver, when the switch is off is ## S_2 = \frac{\sqrt{2}}{2} VA ##. When the switch is on, then, active power(P) of all receivers is twice smaller than it was before it was on. Find the phase difference of these two current generators.
When the switch is off i know the value of S2=U2I2 but i don't know how that can help me to determine the value of Ig1 since i have product of effective values of voltage and current in the second branch.
When the switch is off i know the value of S2=U2I2 but i don't know how that can help me to determine the value of Ig1 since i have product of effective values of voltage and current in the second branch.