Two electrical devices are connected as shown in Figure \(\mathrm{P} 1-15\). 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) \(v=+12 \mathrm{~V}\) and \(i=-1.2 \mathrm{~A}\)
(b) \(v=+80 \mathrm{~V}\) and \(i=+10 \mathrm{~mA}\)
(c) \(v=-240 \mathrm{~V}\) and \(i=-12 \mathrm{~mA}\)
(d) \(v=-15 \mathrm{~V}\) and \(i=-300 \mu \mathrm{A}\)

A +