A metallic wire is stretched from original length of 1 m to 5 m. If the original cross- sectional area is 2 square millimeters and original resistance is 8 ohms, determine the new resistance (in ohms) of the metallic wire. Assume the volume of the wire is preserved.

A metallic wire is stretched from original length of 1 m to 5 m. If the original cross- sectional area is 2 square millimeters and original resistance is 8 ohms, determine the new resistance (in ohms) of the metallic wire. Assume the volume of the wire is preserved.

Physics for Scientists and Engineers: Foundations and Connections

1st Edition

ISBN:9781133939146

Author:Katz, Debora M.

Publisher:Katz, Debora M.

Chapter28: Current And Resistance

Section: Chapter Questions

Problem 67PQ

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Question

A metallic wire is stretched from original length of 1 m to 5 m. If the original cross-
sectional area is 2 square millimeters and original resistance is 8 ohms, determine the
new resistance (in ohms) of the metallic wire. Assume the volume of the wire is
preserved.

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