8. A copper bus bar, used to conduct large amounts of current at a power station, is 1.20 m long and 9.40 cm by 3.50 cm in cross section. What voltage applied to the ends of the bar will produce a current of 2700 A through it(the resistivity of copper is 1.72 x 10-8 2m? V 19 00

8. A copper bus bar, used to conduct large amounts of current at a power station, is 1.20 m long and 9.40 cm by 3.50 cm in cross section. What voltage applied to the ends of the bar will produce a current of 2700 A through it(the resistivity of copper is 1.72 x 10-8 2m? V 19 00

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...

See similar textbooks

Related questions

Q: A wire 50.0 m long and 2.00 mm in diameter is connectedto a source with a potential difference of…

Q: A particular wire has a resistivity of 3.0 × 10−8 V · m and a cross-sectional area of 4.0 × 10−6 m2…

Q: A conductor has a cross-sectional area of 2.3×106 m² and the number of free electrons per unit…

A: Cross-sectional area is A = 2.3×10-6 m2 Electron density is n = 8.5×1028 electron/m3 Current, I =…

Q: 7) What is the current in the circuit below? 25 N 9.0 V 31 Ω 19 N wwww-wwN

A: The equivalent resistance of the series circuit is calculated as, Re=25+31+19 Ω=75 Ω

Q: 7.) A gold wire (Paold 2.44 x 10 Qm) has a length of 10 meters and a resistance of 0.5 Q. Determine…

Q: A 4.0 m length of gold wire is connected to a 1.5 V battery, and a current of 4.0 mA flows through…

Q: Number 12 copper wire (diameter 0.08080 inch) used for electrical installations in homes. What is…

A: Given, Diameter of wire,d=0.08 inch=0.002 m Length,L=50 m Resistivity,ρ=1.7×10-8Ωm Current,I=6 A

Q: What is the resistance (in units of 0) of a wire made of a material with a resistivity of 3.2 × 10-8…

A: Resistivity ῥ = 3.2*10-8 ohm . m Length L = 39.3 m Diameter = 0.50mm = 0.50*10-3m

Q: The resistance of a 100-cm wire of cross sectional area 2 x 10^-6 m^2 is 400 n. What is the…

Q: 280 CHAPTER 6. ELECTRONICS .6.17 How many electrons will pass through a cylindrical copper wire of…

A: We know current density J =I/A Where I = current flowing coper wire A = area of copper wire But…

Q: 52.0-g sample of a conducting material is all that is available. The resistivity of the material is…

Q: 50 \( \Omega \) at 20 C, what is the measured temperature (in units of C) when its resistance is…

A: Initial temperature = T=20 °C Initial resistance = R = 50 ohm Final resistance = R'= 77.3 ohm…

Q: What is the resistance (in units of 0) of a wire made of a material with a resistivity of 3.2 x 108…

Q: 1. What current flows through a 0.50 mm diameter rod of Aluminum that is 20.0 cm long, when 22 V is…

A: Resistance=ρLA A= π r2 = 1.96x10-7 m2 Resistance = 0.027 ohm

Q: 13.4 A rectangular bar of iron is 2.0 cm by 2.0 cm in cross section and 40 cm long. Calculate its…

Q: 3. A 10.0 m long RG-6 coaxial cable has an inner core of copper with a diameter of 7.112 mm. a.…

Q: There is a potential difference of 0.90 V between the ends of a 20 cm long graphite rod that has a…

Q: 2- A copper wire of 3mm diameter with conductivity of 6.7 * 107 (0.m)1, and electron mobility of…

Q: There is a potential difference of 1.6 V between the ends of a 10 cm long graphite rod that has a…

Q: - 44. What is the resistance of an aluminum wire of length 10 m and cross-sectional area of 0.002 m²…

A: length = l = 10 m area = A = 0.002 m2 resistivity = 2.65X10-8X 100.002= 2.65 x 10-8 ohm-m

Q: 6. The resistance of wire A is 12 Q. Wire B, made of the same material as wire A, is twice as long…

Q: 5) A thin copper wire with a diameter 2.5 mm is connected to a 1.2-V potential difference, a current…

A: Diameter, Potential difference, Current, Resistivity,

Q: What is the resistance (in units of Q) of a wire made of a material with a resistivity of 3.2 × 10-8…

Q: 9. A silver block (resistivity at 20°C of 1.59x10-8 Qm) is hooked t a power supply (not in the…

A: Given: resistivity ρ = 1.59*10-8 Ωm length l = 44cm = 0.44m width w = 13 cm =0.13 m height h = 21cm…

Q: 11. Consider a wire with conduction electron density 5.9 x 1028 5. If the diameter of the wire is…

Q: How much electrical power is dissipated as heat when 7.00 A flow through a 62.0 m long piece of…

A: Given data The current flowing is given as I = 7 A. The length of the copper wire is given as L =…

Q: What is the resistance (in units of N) of a wire made of a material with a resistivity of 3.2 x 102.…

Q: An electric device delivers a current of 5.0 A to a device. How many electrons flow through this…

A: Given current deliver by the device , I = 5.0 A time , t = 10 s charge on an electron , q =- 1.6 x…

Q: QUESTION 7 Number 10 copper wire (radius = 1.50 mm) is commonly used for electrical installations in…

A: Given data The radius of the wire is given as r = 1.5 mm. The length of the wire is given as L = 20…

Q: A 0.82 m long wire has a cross-sectional area of 3.6 x 10-° m² and is made of copper of resistivity…

A: Given data: L=0.82 mA=3.6×10-9 m2ρ=1.72×10-8 Ω.m Need to determine the resistance of the wire.

Q: A 4.0 m length of gold wire is connected to a 1.5 V battery, and a current of 4.0 mA flows through…

Q: 8. A current of 4A flows through a wire. Number of electrons which will pass through a given point…

A: current is 4A CURRENT IS NOTHING BUT THE AMOUNT OF CHARGE FLOWN IN ONE SEC.

Q: 1. If electricity costs 15 Bz per kilowatt-hour, how much does it cost to operate a 220 V water…

A: Voltage,V=220Vconsumed current,I=5Atime taken in a day=3hrtime taken in month(t)=30×3=90 hrenergy…

Q: A carbon rod with a radius of 2.1 mm is used to make a resistor. What length of the carbon rod…

Q: 1) Gold is the most ductile of all metals. For example, 1 gram of gold can be drawn into a wire 2.4…

A: Here, I’ve answered Q.No.1

Q: what is the drift speed of the electrons?Assume that each copper atom contributes one freeelectron…

A: Given : Crossection area, A = 3.31 x 10-6 m2 Current, i = 10 A density of copper, d = 8.95 g/cm3…

Q: 6. The resistance of wire A is 12 Q. Wire B, made of the same material as wire A, is twice as long…

Q: If the current flowing through a cylindrical wire with cross-sectional area A=2x10^-6m² is 0.6A and…

Q: A certain laboratory experiment requires an aluminum wire of length of 35.0 m and a resistance of…

Q: A thermometer made of Platinum has a resistance of 50 \( \Omega \) at 20 C, what is the measured…

Q: (12)A 1.6m metal wire of resistivity 4x07m has cross-sectional area of 3.2x10 m². What is the…

A: Given data: Length (L) = 1.6 m Resistivity (R) = 4×10-7 Ω.m Area (A) = 3.2×10-6 m2 Required:…

Q: 1] A copper wire has a cross sectional area of 7.85 x 10-7 m2 . The number density of copper is 8.5…

A: In the given question We have to determine the drift velocity of the electrons through the wire.

Q: 3. What is the electric resistance of a copper wire 225 mm long with a radius of 0.85 mm? 4. An Iron…

Q: A copper wire of length 0.5 m and area 2 x 10^9 m^2 is connected to a 12 V battery. What current…

A: Length of copper wire (L) = 0.5 m Cross-sectional area of wire (A) = 2 x109 m2 Potential difference…

Q: #18 has a diameter of 1.2 x 10-3 m; and #22 has a diameter of 6.4 x 10-4 m. The resistivity of iron…

Q: What is the resistance (in units of 0) of a wire made of a material with a resistivity of 3.2 x 10-8…

Q: What is the resistance (in units of Q) of a wire made of a material with a resistivity of 3.2 × 10-8…

A: Given the resistivity of a material ρ =3.2×10-8 Ω.mlenght of wire =36.4 mdiameter of wire =0.50…

Q: What is the resistance (in units of 0) of a wire made of a material with a resistivity of 3.2 x 10-8…

A: What is the resistance of a wire made of a material with a resistivity of 3.2* 10-8 m. if its…

Q: 25.12 A Copper wire has a square cross section 2.3 mm on a side. The wire is 4.0 m long and…

A: Given,

Q: The temperature coefficient of resistivity for copper is 0.0068°C^-1. If a copper wire has a…

Question

8. A copper bus bar, used to conduct large amounts of current at a power station, is 1.20 m long and 9.40 cm by 3.50 cm in cross
section. What voltage applied to the ends of the bar will produce a current of 2700 A through it(the resistivity of copper is
1.72 x 10-8 2m?
V
19 00

Expert Solution

This question has been solved!

Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.

SEE SOLUTION Check out a sample Q&A here

Step 1

VIEW

Step 2

VIEW

Step by step

Solved in 2 steps with 2 images

SEE SOLUTION Check out a sample Q&A here

Knowledge Booster

Learn more about

Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, physics and related others by exploring similar questions and additional content below.

Similar questions

When a straight wire is heated, its resistance changes according to the equation R = R0 [1 + (T T0)] (Eq. 17.7), where is the temperature coefficient of resistivity. (a) Show that a more precise result, which includes the length and area of a wire change when it is heated, is R=R0[1+(TT0)][1+(TT0)][1+2(TT0)] where is the coefficient of linear expansion. (See Topic 10.) (b) Compare the two results for a 2.00-m-long copper wire of radius 0.100 mm, starting at 20.0C and heated to 100.0C.
When a straight wire is heated, its resistance changes according to the equation R = R0 [1 + (T T0)] (Eq. 17.7), where is the temperature coefficient of resistivity. (a) Show that a more precise result, which includes the length and area of a wire change when it is heated, is R=R0[1+(TT0)][1+(TT0)][1+2(TT0)] where is the coefficient of linear expansion. (See Topic 10.) (b) Compare the two results for a 2.00-m-long copper wire of radius 0.100 mm, starting at 20.0C and heated to 100.0C.
An aluminum wire 1.628 mm in diameter (14-gauge) carries a current of 3.00 amps, (a) What is the absolute value of the charge density in the wire? (b) What is the drift velocity of the electrons? (c) What would be the drift velocity if the same gauge copper were used instead of aluminum? The density of copper is 8.96 g/cm3 and thedensity of aluminum is 2.70 g/cm3. The molar mass ofaluminum is 26.98 g/mol and the molar mass of copper is 63.5 g/mol. Assume each atom of metal contributes one free electron.
What current flows through a 2.54-cm-diameter rod of Pure silicon that is 20.0 cm long, when 1.00103 V is applied to it? (Such a rod may be used to make nuclear- particle detectors, for example.)
-gauge copper wire has a diameter of 9.266 mm. Calculate the power loss in a kilometer of such wire when it carries 1.00102 A.
Review. When a straight wire is warmed, its resistance is given by R = R0,[1 + a(T T0)] according to Equation 27.20, where a is the temperature coefficient of resistivity. This expression needs to be modified if we include the change in dimensions of the wire due to thermal expansion. For a copper wire of radius 0.100 0 mm and length 2.000 m, find its resistance at 100.0C, including the effects of both thermal expansion and temperature variation of resistivity. Assume the coefficients are known to four significant figures.