The figure shows four straight wires in space carrying currents with different magnitudes and directions. The absolute value of the line integral of B over the closed-dashed path (in 10-7 T.m2) is: O 3A 04A O IA O 2A O 4T O 28T O 40T O 8T zero

The figure shows four straight wires in space carrying currents with different magnitudes and directions. The absolute value of the line integral of B over the closed-dashed path (in 10-7 T.m2) is: O 3A 04A O IA O 2A O 4T O 28T O 40T O 8T zero

Physics for Scientists and Engineers: Foundations and Connections

1st Edition

ISBN:9781133939146

Author:Katz, Debora M.

Publisher:Katz, Debora M.

Chapter31: Gauss’s Law For Magnetism And Ampère’s Law

Section: Chapter Questions

Problem 67PQ

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Concept explainers

Ferromagnetism

Ferromagnetism is a mechanism by which some materials show magnetic properties. Iron and magnetite, an oxide of iron, are two naturally occurring materials that show the property of ferromagnetism. The word ferromagnetism is derived from the Latin name of iron, "Ferrum" as it was the first observed material to show such property. The property of ferromagnetism is shown by only a few substances such as iron, nickel, cobalt, and their alloys. Some transition metals and alloys of rare-earth metals also show ferromagnetism.

Question

The figure shows four straight wires in space carrying currents with different magnitudes and
directions. The absolute value of the line integral of B over the closed-dashed path (in 107
T.m2) is:
of
O 3A
®4A
O IA
O 2A
O 41
O 28T
O 40TT
O 8T
O zero

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