A wire sample (0.75 mm in diameter and 20 cm in length) is placed in anelectrical circuit. A voltage drop of 464 mV is measured across the length ofthe wire as it carries a 2 A current. Calculate the electrical conductivity of thisalloy. From Table 4 below, which gives the conductivities of differentmaterials at 20C, identify the material. MaterialElectrical Conductivity(Sm-1)Manganin 2x106Nickel 14x106Aluminium 30x106Copper 50x106Silver 63x106Table 4. Conductivities of different materials at 20 C.

A wire sample (0.75 mm in diameter and 20 cm in length) is placed in anelectrical circuit. A voltage drop of 464 mV is measured across the length ofthe wire as it carries a 2 A current. Calculate the electrical conductivity of thisalloy. From Table 4 below, which gives the conductivities of differentmaterials at 20C, identify the material. MaterialElectrical Conductivity(Sm-1)Manganin 2x106Nickel 14x106Aluminium 30x106Copper 50x106Silver 63x106Table 4. Conductivities of different materials at 20 C.

University Physics Volume 2

18th Edition

ISBN:9781938168161

Author:OpenStax

Publisher:OpenStax

Chapter9: Current And Resistance

Section: Chapter Questions

Problem 14CQ: The current I is measured through a sample of an ohmic material as a voltage V is applied, (a) What...

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