Electrical Engineering: Principles & Applications (6th Edition)

Published by Prentice Hall
ISBN 10: 0133116646
ISBN 13: 978-0-13311-664-9

Chapter 1 - 1.3 - Problems - Power and Enery - Page 36: P1.20

Answer

In passive reference configuration, the current reference enters the positive polarity of the voltage. This is valid in double subscript notation when the current reference direction is positive (enters the same terminal) as the positive reference for the voltage.
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