1. A wire 50 m long and 1 mm in radius is connected to a battery 9.11 V with a current of 36 A.Taking the temperature at 20"C and using the table of resistivities for some materials above,determine the material of the wire. (Copper) UnitThe SI unit for J is amperes per square meter ()Resistivities and Temperature Coefficients of Resistivities for Some MaterialsMaterialResistivity ( m)Temperature Coefficients a (/°C)3.8x 10-3Silver1.59 x 10-81.7 x 10-82.44 x 10-#2.82 x 10-#CopperGold3.9 x 10-33.4 x 10-33.9 x 10-34.5 x 10-35.0 x 10-33.92 x 10-3.9 x 10-30.4 a 10-3-0.5 x 10-3-48 x 10-3-75x 10-3AluminumTungsten5.6x 10-8Iron10 x 10-811 x 10-22 x 10-1.0 x 10-3.5 x 10-5PlatinumLeadNichromeCarbonGermanium0.46Silicon2.3 x 105GlassHard Rubber10 to 101510'5Sulfur1015Quariz75x 1016

Ohms law state that the voltage across a ohmic conductor is directly proportional to the current…

A wire 50 m long and 1 mm in radius is connected to a battery 9.11 V with a current of 36 A. Taking the temperature at 20°C and using the table of resistivities for some materials above, determine the material of the wire. (Copper)

A wire 50 m long and 1 mm in radius is connected to a battery 9.11 V with a current of 36 A. Taking the temperature at 20°C and using the table of resistivities for some materials above, determine the material of the wire. (Copper)

College Physics

11th Edition

ISBN:9781305952300

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter1: Units, Trigonometry. And Vectors

Section: Chapter Questions

Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...

See similar textbooks

Similar questions

When an electric heater is turned on, the Nichrome heating element is at 0° C and draws a current of 14 A, with a potential difference of 120 V between the ends of the element. The element heats up to 744° C, with the potential difference constant. Find the final current. (The temperature coefficient of resistivity of Nichrome is 4.0 10-4 (°C)-1.)
The resistivity of pure germanium = 600 x 10-³ Nm. Calculate the resistance of a cylinder of pure germanium with a radius of 1.5 mm and a length 7.0 mm. Note the units of millimeters. R= How long would a cylinder of this radius need to be in order for the resistance of pure germanium to be equal to 2250 ohms? L= mm
Question 2/ Vraag 2: Current and Resistance 2.1 A piece of wire I cm long carries a current I when a voltage V is applied across its ends at a temperature of 0°C. If the resistivity of the material of which the wird is made varies as shown in the figure, what length of the same diameter wire is needed so that the same current flows when the same voltage is applied at temperature 400°C? (4) 12 10 8 200 400 600 800 1000 Temperature ("C) Resistivity (10 2m)
A current-carrying gold wire has diameter 6.96 mm. The electric field in the wire is 0.58 V/m. What is the current carried by the wire in kA? Note that the resistivity of gold is = 2.44x10-8 m dont round off and show the final answer in 3 decimal places if possible
When an electric heater is turned on, the Nichrome heating element is at 0° C and draws a current of 18 A, with a potential difference of 120 V between the ends of the element. The element heats up to 795° C, with the potential difference constant. Find the final current. (The temperature coefficient of resistivity of Nichrome is 4.0 10-4 (°C)-1.)
(a) A 35.5-m length of copper wire at 20.0°C has a radius of 0.23 mm. If a potential difference of 7.0 V is applied across the length of the wire, determine the current in the wire. (Use the values in the following table.) Resistivities and Temperature Coefficients of Resistivity for Various Materials (at 20°C) Material Silver A Copper Gold Aluminum Tungsten Iron Platinum Lead Nichrome a Carbon Germanium Silicon Glass Hard rubber Sulfur Quartz (fused) Resistivity (2. m) 1.59 x 107 1.7 x 10-8 2.44 x 10-8 2.82 x 10 5.6 x 107 10.0 x 10 11 x 10 -8 -8 0.46 -8 640 22 x 10-8 3.5 x 107 -8 -8 150 x 10- -8 -5 1010-1014 ≈1013 1015 75 x 1016 Temperature Coefficient of Resistivity [(°C)-¹] 3.8 x 10 -3 3.9 × 10-3 3.4 x 10-3 3.9 x 107 5.0 x 10 4.5 x 10-3 3.92 x 10 -3 -3 0.4 x 107 -3 3.9 × 10-3 -3 -3 -0.5 x 107 -48 x 10-3 -75 x 10-3 aA nickel-chromium alloy commonly used in heating elements. (b) If the wire is heated to 40.0°C while the 7.0-V potential difference is maintained, what is the resulting…
Needs Complete typed solution with 100 % accuracy.
Q7.(Page No.369, 18.9 Exercises, Problem No.3). The resistivity of a sample of germanium is 60x 102 Im. A cylinder of germanium 50mm long and 0.50 mm in radius has a p.d. of 10 v applied across its ends. (a) What current passes through the specimen? (b) What is the current density (1/A) in the sample?
complete solution. A piece of copper wire has a resistance of 1.5Ω. Solve for the resistance of the manganin wire of one-fourth length and one-fifth diameter if the resistivity of manganin is 20 times that of copper.
Platinum has a resistivity of 10.6×108 m at 20°C. What will the resistivity of platinum when then temperature is increased to 1000°C. (Take a as 3.927×10-³)
(a) A 35.1-m length of copper wire at 20.0°C has a radius of 0.23 mm. If a potential difference of 7.0 V is applied across the length of the wire, determine the current in the wire. (Use the values in the following table.) Resistivities and Temperature Coefficients of Resistivity for Various Materials (at 20°C) Material Resistivity(Ω · m) Temperature Coefficientof Resistivity [(°C)−1] Silver 1.59 ✕ 10−8 3.8 ✕ 10−3 Copper 1.7 ✕ 10−8 3.9 ✕ 10−3 Gold 2.44 ✕ 10−8 3.4 ✕ 10−3 Aluminum 2.82 ✕ 10−8 3.9 ✕ 10−3 Tungsten 5.6 ✕ 10−8 4.5 ✕ 10−3 Iron 10.0 ✕ 10−8 5.0 ✕ 10−3 Platinum 11 ✕ 10−8 3.92 ✕ 10−3 Lead 22 ✕ 10−8 3.9 ✕ 10−3 Nichromea 150 ✕ 10−8 0.4 ✕ 10−3 Carbon 3.5 ✕ 10−5 −0.5 ✕ 10−3 Germanium 0.46 −48 ✕ 10−3 Silicon 640 −75 ✕ 10−3 Glass 1010–1014 Hard rubber ≈1013 Sulfur 1015 Quartz (fused) 75 ✕ 1016 aA nickel–chromium alloy commonly used in heating elements. ??A(b) If the wire is heated to 36.0°C while the 7.0-V potential difference is…
The ratio of the resistivity of Tungsten (W) to the resistivity of Copper (Cu) is pw/pcu~ 3.0. If wires of the same length and diameter are made from each material, which wire will experience the largest potential drop for the same applied current I? Briefly explain your answer.