A 1.0x10-3electrons/s current in a 1.2-mm-diameterV/m electric field creates a 2.5x1017aluminum wire.Part AWhat is the drift speed?Express your answer using two significant figures.Vd =m/sSubmitRequest AnswerPart BWhat is the mean time between collisions for electrons in this wire?Express your answer using two significant figures.?T =

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Answered: A 1.0×10¬3 V/m electric field creates a…

University Physics Volume 2

18th Edition

ISBN:9781938168161

Author:OpenStax

Publisher:OpenStax

Chapter9: Current And Resistance

Section: Chapter Questions

Problem 30P: A high-energy proton accelerator produces a proton beam with a radius of r - 0,90 mm. The beam...

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Solve the following: 1. How many nanocoulomb are there in 3.65 billion electrons ? 2. A 25 ampere electric current flows in a conductor in 75 millisecond. Find: a. current equivalent in mA? b. How many charges are transferred ? c. How much work is required to transfer if 3V is applied. 3. A charge of 3.5 µC present in an electric field produces a force of 0.008 Newton. What is the intensity of the electric field ? 4. A charge of 0.6 µC is placed in an electrostatic field whose intensity is 3 x 105 N/C. How strong is the force acting on the charge ? 5. Two objects are both negatively charge with 0.04 coulomb each and 140 cm apart. What kind of force exist Between charges? How much? 6. Find the force that exist between two charges of 8.53 μC and 4.5 µC that 0.25 meters in air?
1.9. A block of conductor has the dimensions Lo x 2Lo x 4Lo. As shown in the figure below, the same battery is connected across the conductor in three different configurations. Which configuration draws the smallest current from the battery? All configurations draw equal current. 21 Lo 4Lo 4LO (a) (b) (c) (d)
(1) What is a definition of electric current? Label the variables. (2) Suppose that 1016 electrons pass through a cross-section of a wire each second. What is the current in the wire? (3) The current in a wire varies with time according to the relation / = 5+3t where I is in amperes andt is in seconds. What is the number of coulombs of charge that pass a cross section of the wire between t=3s and t=5s?
Q3.a.Calculate the current density for Aluminum wire has radius 1mm and current 1mA? 318.31A/m? b. Calculate the drift speed for electrons in the wire ? 3.29*10-8 m/s if the pAL-2.7*103 kg/m3 and if you know that one mole in the Aluminum has mass equal to 26.98g and there is one conduction for each Aluminum atome?
sq 4. Maximum surface resistance. Consider a square sheet of side L, thickness d, and electrical resistivity p. The resistance measured between opposite edges of the sheet is called the surface resistance: R = pL/ Ld = p/d, which is independent of the area of the sheet. (R is called the resistance per square and is expected in ohms per square, because p/d has the dimensions of ohms.) If we express p by p=m/ne²t, then Rq=m/ndet. Suppose now that the minimum value of the collision time is determined by scattering from surfaces of the sheet, so that Td/v, where v is the Fermi velocity. Thus the maximum surface resistivity is Rmvp/nd²e². Show for a monatomic metal sheet one atom thickness that sq Rħ/e² = 4.1k, where lkn is 10³ ohms. sq
A 1.4x10³ V/m electric field creates a 3.5x10¹7 elec/s current in a 1.2-mm-diameter aluminum wire. What is the drift speed? Express your answer with the appropriate units. "₁= 5.2.106 Submit Previous Answers Request Answer m S Part B * Incorrect: Try Again; 4 attempts remaining HA What is the mean time between collisions for electrons in this wire? Express your answer with the appropriate units. ? 2.1 10-¹4 S Submit Previous Answers Request Answer * Incorrect; Try Again; 5 attempts remaining
A change of 401 C charge pass through an imaginary plane during a time interval of 2.0 minutes. What is the current in amps (coulombs per second)? Current = Charge/time (convert minutes to seconds). Enter units as A or C/s
A student woants to identify the Resistivity of a conducting wire of unknown material. Resistivity is a property of a material that quantifies how strongly it conducts electric current, and it is formulated as, of p= R4 where R is the Resistance (ohms), A cross-sectional area (meters-squared) and I is the length (meters) of the wire. The student runs an experiment on a cylindrical wire of a length l of 2 centimeters and the cross- sectional area A of the wire is 6.1 centimeters-squared. The measurements of the Current is as below Dataset Voltage (Applied, Volts) Current (Measured, Amperes)
The compressor on an air conditioner draws89.6 A when it starts up. The start-up time isabout 0.282 s.How much charge passes a cross-sectionalarea of the circuit in this time?Answer in units of C.
Q3.a.Calculate the current density for Aluminum wire has radius 1mm and current 1mA? 318.31A/m? b. Calculate the drift speed for electrons in the wire ? 3.29*10-8 m/s
An electric device draws 6.10 AA at 240 VV. If the voltage drops by 25 %, what will be current, assuming nothing else changes? Express your answer to two significant figures and include the appropriate units. I final= If the resistance of the device were reduced by 25 %, what current would be drawn at 240 VV? Express your answer to two significant figures and include the appropriate units. I final=
A 1.7×10-³ V/m electric field creates a 3.5×1017 elec/s current in a 1.1-mm-diameter aluminum wire. Part A What is the drift speed? Express your answer with the appropriate units. vd = Submit Part B T= HÅ Value Submit Request Answer What is the mean time between collisions for electrons in this wire? Express your answer with the appropriate units. μA Value Request Answer pond Units Box Units ? ?

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