Don't use use chat gpt The figure below displays a straight-wire resistor connected to a battery with V=1.8 V and, hence, running some steady-state current. This resistor is actually made out of two different conductive materials as shown. The first material has theresistivity p1=4.5 × 10-8 -m and length /1=3.8 cm, the second material is characterized by p₂=8.2 × 10-8 2.m andlength /2=6.1 cm.ΡιP24112What is the strength E₁ of the driving electric field inside the first material?:E₁=V/m.What is the strength E2 of the driving electric field inside the second material?:E2=V/m.

Answered: Image /qna-images/answer/53b5cc0c-e995-416e-b488-a7b12b4bb465.jpg

Answered: The figure below displays a…

Principles of Physics: A Calculus-Based Text

5th Edition

ISBN:9781133104261

Author:Raymond A. Serway, John W. Jewett

Publisher:Raymond A. Serway, John W. Jewett

Chapter21: Current And Direct Current Circuits

Section: Chapter Questions

Problem 9CQ

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Two conducting wires A and B of the same length and radius are connected across the same potential difference. Conductor A has twice the resistivity of conductor B. What is the ratio of the power delivered to A to the power delivered to B? (a) 2 (b) 2 (c) 1 (d) 12 (e)12
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Pure copper has a resistivity of 1.68 × 10−8 Ωm. Some accurate cubes of copper are prepared,and electrical measurements are made, for which current is passed across a pair of oppositefaces.a) Comparing a 2.5 cm cube and a 5 cm cube, which will have the higher conductance? Explain your answer.b) Given eight 1 cm cubes, how can they be stacked to get the highest and the lowest resistance between opposite faces of the stack? Calculate the resistance of each stack.
A 24 m length sample of an unknown metal wire is connected to a known ?= 0.56 Ω resistor and a ?= 24 V battery as shown. The unknown metal wire's cross-sectional radius is 0.0011 m. The voltage across the known resistor is measured to be 9.9 V. What is the wire sample's conductivity (in 1Ω⋅m)?
A 1.70 m cylindrical rod of diameter 0.550 cm is connected to a power supply that maintains a constant potential difference of 12.0 V across its ends, while an ammeter measures the current through it. You observe that at room temperature (20.0°C) the ammeter reads 18.3 A, while at 92.0°C it reads 17.2 A. You can ignore any thermal expansion of the rod. For related problemsolving tips and strategies, you may want to view a Video Tutor Solution of Temperature dependence of resistance. Find the resistivity for the material of the rod at 20.0°C. Express your answer in ohm-meters. p= Submit Part B ΑΣΦ α= Request Answer ? Find the temperature coefficient of resistivity at 20.0°C for the material of the rod. Express your answer in reciprocal degrees Celsius to two significant figures. V— ΑΣΦ Ω· m ? (°C) -¹
A nichrome rod of length LN = 78 cm is connected in series (end to end) to a carbon rod of length LC = 5 cm. Both rods have cross-sectional areas of A = 85 mm2. At T0 = 20° C the resistivity of nichrome is ρN = 1.50 × 10-6 Ω⋅m and the resistivity of carbon is ρC = 3.50 × 10-5 Ω⋅m. The temperature coefficient of nichrome is positive with a value αN = 0.4 × 10-3 °C-1. The temperature coefficient of carbon is negative with a value αC = -0.5 × 10-3 °C-1. The nonlinear dependence of the resistivity on temperature T can be written as ρ = ρ0eα(T-T0). A)Write an expression for the total resistance of the nichrome-carbon combination as a function of temperature in terms of quantities given in the introduction. Simplify your answer as much as possible. Answer to part A is r(t)= ( ( ρC LC )/A ) eαC ( T - T0 ) + ( ( ρN LN )/A ) eαN ( T - T0 ) B) Calculate the temperature in degrees Celsius for which the resistance of the carbon-nichrome combination will be a minimum. C) Calculate the…
Earth's lower atmosphere contains negative and positive ions that are produced by radioactive elements in the soil and cosmic rays from space. In a certain region, the atmospheric electric field strength is 174 V/m and the field is directed vertically down. This field causes singly charged positive ions, at a density of 868 cm³, to drift downward and singly charged negative ions, at a density of 624 cm3, to drift upward (see the figure). The measured conductivity of the air in that region is 3.45 x 10-14 (0-m)-¹. Calculate (a) the magnitude of the current density and (b) the ion drift speed, assumed to be the same for positive and negative ions. (a) Number i (b) Number Units Units
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Copper has a work function of 4.70 eV, a resistivity of 1.7 x10-8 Ω ∙ m, and a temperature coefficient of 3.9 x10 -3 °C -1. Suppose you have a cylindrical wire of length 1.5 m and diameter 0.40 cm connected to a variable power source.a) Draw a clear physics diagram b) At what temperature would the wire have 2 times the resistance that it has at 20 °C?c) What is the peak wavelength of radiation emitted by a wire of thistemperature?d) If light at only the wavelength found above were shone onto a copper plate, what would be the maximum kinetic energy of the ejected electrons?
Upvote will be given. No long explanation needed. Answer in 2 decimal places with units.
A resistor is attached in a simple circuit (see Figure below) to an ideal battery that has AV = 10 V. The resistor is 1.4 m long and has a cross-section of 0.2 mm². You measured the resistance to be 32 at To = 27°C. Since the resistor is made of titanium (a = 0.0038 K-¹), what would be the current flowing through it at a temperature T = 0°C? ww

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