Q. m and 11.0 x 10 Q. m, determine the ratio of their lengths. Two wires have the same resistance and diameter. If the wires are made of tungsten and platinum with resistivities respectively of 5.60 x 10 Lw

Q. m and 11.0 x 10 Q. m, determine the ratio of their lengths. Two wires have the same resistance and diameter. If the wires are made of tungsten and platinum with resistivities respectively of 5.60 x 10 Lw

College Physics

10th Edition

ISBN:9781285737027

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter17: Current And Resistance

Section: Chapter Questions

Problem 10CQ: Power P0 = I0 V0 is delivered to a resistor of resistance R0. If the resistance is doubled (Rnew =...

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Concept explainers

Microscopic view of current

In physics, the term current is expressed as the rate of flow of electric charges across the area per unit time (I=q/t). It propagates along in the direction of the motion of positive charges. When the current is caused by the motion of electrons, the direction of the current is opposite to the flow.

Question

Two wires have the same resistance and diameter. If the wires are made of tungsten and platinum with resistivities respectively of 5.60 x 10¯° 0 ·m and 11.0 × 10¯° N · m, determine the ratio of their lengths.
Lw
Lpt

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