given are
N=8.4*10^28 electrons
A=7.4*10^-7 m^2
I=1amp
using formula
I = nAve
v = I/(nAe)
v=1/8.4*10^28*7.4*10^-7*1.6*10^-19
v=0.01005*10^-2m/sec
Copper contains 8.4 Times 10^28 free electrons per cubic meter. A copper wire of cross-sectional area...
(16 points) Copper has 8.5 x 1023 free electrons per cubic meter. A segment of copper wire that has a length of 45 cm and cross-sectional radius of 1.1 mm carries a current of 4.8 A. (a) Calculate the drift velocity of electrons in the wire. 9. (b) Calculate the average time i tkes for an electron to dfift through the wire segment. (Area of a circle A m2, where r is the radius)
Copper has 8.5 times 10^28 free electrons per cubic meter A 73.0 cm length of 12-gauge copper wire, that is 2.05 urni in diameter, carries 4.85 A of current. How much time does it take for an electron to travel the length of the wire? Repeat for 6-gauge copper wire (diameter 4.12 mm) of the same length that carries the same current.
A copper wire of 1.0 cross-sectional area carries a current of 2.72 A What is the magnitude of the drift velocity in m/s) for an electron in the wire? The number of free charge carries of copper per unit volume is 8.0x10 electrons/m! A. 2.0E10+
2. A copper wire carrying a current of 5.00 A has a cross-sectional area of 5.00 x 106 m2. Find the drift speed of the electrons in the wire. The density of copper is 8.96 g/cm3. (Assume that each copper atom supplies one free electron.)
Problem 3 Copper has 8.5-1028 free electrons per cubic meter. A 71.0 cm length of 12-gauge copper wire that is 2.05 mm in diameter carries 4.85 A of current. (a) How much time does it take for an electron to travel the length of the wire? (b) Repeat part (a) for 6-gauge copper wire (diameter 4.12 mm) of the same length that carries the same current. (c) More generally, how does changing the diameter of the wire that carries a...
An iron wire has a cross-sectional area of 7.50 ✕ 10−6 m2. Carry out steps (a) through (e) to compute the drift speed of the conduction electrons in the wire. (a) How many kilograms are there in 1 mole of iron? kg/mol (b) Starting with the density of iron and the result of part (a), compute the molar density of iron (the number of moles of iron per cubic meter). mol/m3 (c) Calculate the number density of iron atoms using...
Tipler6 25.P.031.soln. A 10 gauge copper wire carries a current of 23 A. Assuming one free electron per copper atom, calculate the drift velocity of the electrons. (The cross-sectional area of a 10-gauge wire is 5.261 mm2.) mm/s
An aluminum wire having a cross-sectional area of 2.50 ✕ 10−6 m2 carries a current of 3.00 A. The density of aluminum is 2.70 g/cm3. Assume each aluminum atom supplies one conduction electron per atom. Find the drift speed of the electrons in the wire.
A 10.0 cm length of copper wire has a uniform cross-sectional area of 1.0 mm2. If the drift speed of electrons in the wire is: 2.0x10-4 m/s and the electrons all move directly along the wire, what is the magnitude of the current density? What is the total current carried by the wire.
An iron wire has a cross-sectional area of 5.80 ✕ 10−6 m2. Carry out steps (a) through (e) to compute the drift speed of the conduction electrons in the wire. (a) How many kilograms are there in 1 mole of iron? kg/mol (b) Starting with the density of iron and the result of part (a), compute the molar density of iron (the number of moles of iron per cubic meter). mol/m3 (c) Calculate the number density of iron atoms using...