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: P1.28

Answer

a) 50W. Energy is taken b) 50W. Energy is taken c) 50W. Energy is delivered

Work Step by Step

Part a) i = 2A, V = -25V Power = |i*V| = 50W Current flows from (-) to (+) so energy is being taken Part b) i = -2A, V = 25V Power = |i*V| = 50W Current flows from (-) to (+) so energy is being taken Part c) i = -2A, V = -25V Power = |i*V| = 50W Current flows from (+) to (-) so energy is being delivered
Update this answer!

You can help us out by revising, improving and updating this answer.

Update this answer

After you claim an answer you’ll have 24 hours to send in a draft. An editor will review the submission and either publish your submission or provide feedback.