Two electric circuits, represented by boxes A and B, are connected as shown in the figure. The reference direction for the current i in the interconnection and the reference polarity for the voltage v across the interconnection are as shown in
Part A Determine the power associated with the box for i = 7 , v = 30 V.
Part B State whether the power is flowing from A to B or vice versa.
Part C Determine the power associated with the box for i = -8 A, v = -20 V, calculate the power in the interconnection.
Part D State whether the power is flowing from A to B or vice versa.
Part E Determine the power associated with the box for i = 4 A, v = -55 V.
Part F State whether the power is flowing from A to B or vice versa.
Part G Determine the power associated with the box for i = - 9 A, v = 40 V, calculate the power in the interconnection.
Part H State whether the power is flowing from A to B or vice versa.