Two electrical devices are connected as shown in given Figure. 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 = +12 V and i = -1:2 A
(b) v = + 80 V and i = + 10 mA
(c) v = -240 V and i = -12 mA
(d) v = -15 V and i = -300 μA
