Two electrical devices are connected as shown in Figure P1–21. Using the reference marks shown in the figure, find the power transferred and state whether the power is transferred from A to B or B to A when

(a) v ¼ þ 11 V and i ¼ 1.1 A

(b) v ¼ þ80 V and i ¼ þ20 mA

(c) v ¼ 120 V and i ¼ 12 mA

(d) v ¼ 1.5 V and i ¼ 600 mA.AppendixLO1

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+ A B V FIGURE P1-21