A block of carbon is 3.0cmlong and has a square cross- section whose sides are 0.50cmlong. A potential difference of 8.4Vis maintained across its length.(a) What is the resistance(R) of the block?(b) What is the current(I) in this resistor?

A block of carbon is 3.0cmlong and has a square cross- section whose sides are 0.50cmlong. A potential difference of 8.4Vis maintained across its length.(a) What is the resistance(R) of the block?(b) What is the current(I) in this resistor?

University Physics Volume 2

18th Edition

ISBN:9781938168161

Author:OpenStax

Publisher:OpenStax

Chapter9: Current And Resistance

Section: Chapter Questions

Problem 42P: What current flows through a 2.54-cm-diameter rod of Pure silicon that is 20.0 cm long, when 1.00103...

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Resistivity

Resistivity is a characteristic property of the conductor’s material that measures the extent to which the material opposes the flow of current. It is denoted by the Greek letter “rho”. Electrical resistivity, also known as specific resistance, depends on the nature of the material of the conductor and is unaffected by its dimensions.

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