Answer
$$v_{ba}=v=15V$$
$$i_{ba}=-i=3A$$
Since the voltage drop is in the same direction as the positive current flow, energy is being delivered to the element.
Electrical Engineering: Principles & Applications (6th Edition)
by Hambley, Allan R.
Published by
Prentice Hall
ISBN 10:
0133116646
ISBN 13:
978-0-13311-664-9
Chapter 1 - 1.2 - Problems - Circuits, Currents, and Voltages - Page 35: P1.15
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