1) Gold is the most ductile of all metals. For example, 1 gram of gold can be drawn into a wire 2.4 km long. The density of gold is 19.3 x 103 kg/m3, and its resistivity is 2.44 x 10-8 Vm. What is the resistance of such a wire at 20.0°C?6,239 Ω1,130 Ω2,712 Ω2,712,499 Ω2) At 20°C, the carbon resistor in an electric circuit connected to a 5-V battery has a resistance of 2 Ohms. What is the current in the circuit when the temperature of the carbon rises to 80°C?0.026 A0.08 A0.039 A0.062 A

Answered: 1) Gold is the most ductile of all…

College Physics

11th Edition

ISBN:9781305952300

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter17: Current And Resistance

Section: Chapter Questions

Problem 66AP: When a straight wire is heated, its resistance changes according to the equation R = R0 [1 + (T ...

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1) Gold is the most ductile of all metals. For example, 1 gram of gold can be drawn into a wire 2.4 km long. The density of gold is 19.3 x 10³kg/m³, and its resistivity is 2.44 x 10^-8 Vm. What is the resistance of such a wire at 20.0°C?

6,239 Ω	1,130 Ω
2,712 Ω	2,712,499 Ω

2) At 20°C, the carbon resistor in an electric circuit connected to a 5-V battery has a resistance of 2 Ohms. What is the current in the circuit when the temperature of the carbon rises to 80°C?

0.026 A	0.08 A
0.039 A	0.062 A

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