Answered: A wire whose length is 2m and whose…

A wire whose length is 2m and whose diameter is 1.5mm carries a current of 1.2A. The wire dissipates thermal energy at the rate of 60mW. The resistivity (in N.m) of the wire is:

University Physics Volume 2

18th Edition

ISBN:9781938168161

Author:OpenStax

Publisher:OpenStax

Chapter9: Current And Resistance

Section: Chapter Questions

Problem 85CP: A current of I= 25A is drawn from a 100-V batteryfor 30 seconds. By how much is the chemical energy...

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Question

A wire whose length is 2m and whose diameter is 1.5mm carries a current of 1.2A. The wire
dissipates thermal energy at the rate of 60mW. The resistivity (in 2.m) of the wire is:
a) 4.2x10-8
b) 3.7x108
c) 1.4x10-8
d) 2.8x10-8
e) 7.6x10-8
f) 5.1x108

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