What is the significance of the minus sign in the equation below? E= doB dt An inductive element does not absorb energy in a circuit; instead it delivers energy. Inductive effects always act in a sense to oppose the change which caused them. The current and voltage in an inductive element are 180° out of phase. An induced EMF always acts to reduce the current in the circuit in which the EMF is induced.

What is the significance of the minus sign in the equation below? E= doB dt An inductive element does not absorb energy in a circuit; instead it delivers energy. Inductive effects always act in a sense to oppose the change which caused them. The current and voltage in an inductive element are 180° out of phase. An induced EMF always acts to reduce the current in the circuit in which the EMF is induced.

Physics for Scientists and Engineers: Foundations and Connections

1st Edition

ISBN:9781133939146

Author:Katz, Debora M.

Publisher:Katz, Debora M.

Chapter33: Inductors And Ac Circuits

Section: Chapter Questions

Problem 68PQ

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