1) The density of free electrons in gold is 5.90 x 1028 m-3. The resistivity of...
The resistivity of gold is 2.44 x 10-8 ohms.m at room temperature. A gold wire that is 0.9 mm in diameter and 14 cm long carries a current of 940 mA. What is the electric field in the wire? Answer 0.090 V/m 0.028 V/m 0.046 V/m 0.0090 V/m 0.036 V/m
Thanks to anyone that helps! Will rate answer. 3. The resistivity of gold is 2.44 x10^-8 ohm.m at room temperature. A gold wire that is 0.9 mm in diameter and 14 cm long carries a current of 940 mA. What is the electric field in the wire9 A) 0.036 V/m B) 0.0090 V/m C) 0.028 V/m D) 0.046 V/m E) 0.090 V/m
The resistivity of gold is 2.44 x 10-80 mat a temperature of 20°C. A gold wire, 1.8 mm in diameter and 14 cm long, has a current of 480 mA flowing through it. What is the power converted in this wire at 20°C? 0.19 mW O 0.14 mW 0.077 mW 0.25 mW O 0.31 mW
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...
7) 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 it. What is the diameter of the wire? (The resistivity of gold is 2.44 × 10-8 Ω·m.) A) 17 µm B) 8.5 µm C) 48 µm D) 9.0 µm
(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)
13. The resistivity of aluminum at 25 'C has been measured to be 2.72 x 10-8 0 m. The thermal coefficient of resistivity of aluminum at 0 C is 4.29 x 10-3 K-1. Aluminum has a valency of 3, a density of 2.70 g cm3, and an atomic mass of 27 a. Calculate the resistivity of aluminum at-40°С. (Ans: 2.03 x 103 Ω m) b. What is the thermal coefficient of resistivity at-40'C? (Ans: 5.23x 103K c. Estimate the mean...
a. A sculptor has asked you to help electroplate gold onto a brass statue. You know that the charge carriers in the ionic solution are singly ionized gold ions, and you've calculated that you must deposit 0.50 g of gold to reach the necessary thickness. How much current do you need, in mA, to plate the statue in 4.0 hours? b. A metallic wire has a diameter of 4.12mm. When the current in the wire is 8.00A, the drift velocity...
nand a cross sectional area of 0.270 mm2. If the resistivity of copper is 1.70 x 10 m and a potential difference of 0.500 V is maintained across its lenqth, determine the current in has a length of 1.50 the wire (In A) Need Help? Read It -1 points SerPSE10 26.3.0P010 M Ask Your Teacher My Notes f the magnitude of the drift velocity of free electrons in a copper wire i 10 m/s. what the electric field in the...
You discover an metallic alloy having 212.6 x 1026 free electrons per cubic meter and resistivity of 51.73 nano Ohm-m. The internal dielectric constant inside the metal is 4.35 and there are 2.15 neutrons per proton in its nuclei. (a) Compute the mass density of the material (b) Compute the time between scattering events for the electrons, assuming the drude model of conduction (c) Compute the plasma frequency of the electrons. (d) A wire made of this metal is 5.29mm...