A current of 2A flows in a copper wire 2mm in diameter. The density of valence electrons in copper is roughly 9 × 1028 m−3 . Find the drift speed of these electrons. The fundamental charge is 1.602 × 10−19 C .
A current of 2A flows in a copper wire 2mm in diameter. The density of valence...
1. When a current flows in an aluminum wire of diameter 4.67 mm, the drift speed of the conduction electrons is 0.000135 m/s. How many electrons are flowing past a given point each second? The conduction electron density in aluminum is 6.00×1028 m−3. 2. When a current flows in an aluminum wire of diameter 2.15 mm, the drift speed of the conduction electrons is 0.000249 m/s. How many electrons are flowing past a given point each second? The conduction electron...
A 14-gauge copper wire has a diameter of 1.684 mm. What magnitude current flows in amperes when the drift velocity is 1.20 mm/s? (The density of free electrons in copper is 8.34 ✕ 1028 e−/m3.).) ____________ A
An 18-gauge copper wire (diameter 1.02 mm) carries a current with a current density of 1.40×106 A/m2 . Copper has 8.5×1028 free electrons per cubic meter Calculate the current in the wire Calculate the drift velocity of electrons in the wire.
ke=8.99XIU' N.1 Problem 4 A copper wire has a circular cross section with a diameter of 1.25 mm. (i) If the wire carries a current of 2A, find the drift speed of electrons in this wire. (ii) All other things being equal, what happens to the drift speed if the wire is made of a different metal, having a larger number of conduction electrons than copper? M=0.063 kg/mol; p=8.9 g/cm3. Problem 5 A proton moves perpendicular to a uniform magnetic...
A small but measurable current of 8.7 × 10-10 A exists in a copper wire whose diameter is 2.3 mm. The number of charge carriers per unit volume is 8.49 × 1028 m-3. Assuming the current is uniform, calculate the (a) current density and (b) electron drift speed.
A small but measurable current of 8.9 × 10-10 A exists in a copper wire whose diameter is 2.2 mm. The number of charge carriers per unit volume is 8.49 × 1028 m-3. Assuming the current is uniform, calculate the (a) current density and (b) electron drift speed.
The figure shows wire section 1 of diameter D,-5.50R and wire section 2 of diameter D2-3.00R, connected by a tapered section. The wire is copper and carries a current. Assume that the current is uniformly distributed across any cross-sectional area through the wire's width. The electric potential change Valong the length L-1.50 m shown in section 2 is 13.0 μν. The nurmber of charge carriers per unit volume is 820x 1028 m3. What is the drift speed of the conduction...
A small but measurable current of 9.3 x 10-10 A exists in a copper wire whose diameter is 3.6 mm. The number of charge carriers per unit volume is 8.49 x 1028 m-3. Assuming the current is uniform, calculate the (a) current density and (b) electron drift speed.
0 A exists in a copper wire whose diameter is 3.6 mm. The number of charge carriers per unit volume is 8.49 x 1028 m 3. Assuming the current is uniform, calculate the (a) current density and (b) electron drift speed. (a) Number (b) Number Units Units
A copper wire has a circular cross section with a radius of 2.51 mm. (a) If the wire carries a current of 3.93 A, find the drift speed (in m/s) of electrons in the wire. (Take the density of mobile charge carriers in copper to be n = 1.10 ✕ 10^29 electrons/m^3.) m/s (b) For the same wire size and current, find the drift speed (in m/s) of electrons if the wire is made of aluminum with n = 2.11...