A Si cylindrical specimen was 5.1mm in diameter and 51 mm in length, a current has flowed in the length direction of a 0.1 A, and a voltage of 12.5 V was measured between two probes separated by 38 mm. Calculate the electrical conductivity and deduce the resistance of the sample over its full 51 mm length.

Delmar's Standard Textbook Of Electricity
7th Edition
ISBN:9781337900348
Author:Stephen L. Herman
Publisher:Stephen L. Herman
Chapter1: Atomic Structure
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Problem 6RQ: How many valence electrons are generally contained in materials used for insulators?
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A Si cylindrical specimen was 5.1mm in diameter and 51 mm in length, a current has flowed in the length direction of a 0.1 A, and a voltage of 12.5 V was measured between two probes separated by 38 mm. Calculate the electrical conductivity and deduce the resistance of the sample over its full 51 mm length.
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