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With regard to the circuit represented in Fig

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With regard to the circuit represented in Fig. 5.68, first transform both voltage sources to current sources, reduce the number of elements as much as possible. and determine the voltage v3. 60 30 20 WW + 2 V FIGURE 5.68 28. (a) Determine the Thevenin equivalent of the circuit depicted in Fig. 5.71 by first finding Voc and / c (defined as flowing into the positive reference terminal of Vac). (b) Connect a 4.7 kf resistor to the open terminals of your new network and calculate the power it dissipates. 1.I KQ 1.8 kQ 2.3 kQ O + 4.2 V 2.5 kn 2 2.5 kQ Voc FIGURE 5.71