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 8.7 × 10-10 A exists in a copper wire whose...
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.
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
13) A current of 5.0 x 10'10 A exists in a copper wire whose diameneng the curret a charge carriers per unit volume calculate the electron drift speed is 2.3 mm. The number of is 8.49 10 m. Assuming the current is uniform, m A) 44x101s m/s B) 2.2x10 m/s C) 3.8x10 m/s D) 8.9x101 m/s 14) Awire is 1.4 m long and 0.75 mm2 in cross-sectional area. Itcarries acconductivityơof the current of 3.4 A when ity ơ of the...
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 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 .
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.
the emf provided by the battery is 12.6 V 1 Current Density and Drift Speed a) (8 pts) A group of charges, each with charge q, moves with velocity v. The number of particles per unit volume is n. What is the current density J of these charges, in magnitude and direction? Make sure that your answer has units of Alm b) (8 pts) We want to calculate how long it takes an electron to get from a car battery...
Figure 26-28wire section 1 of diameter D1 = 6.00R and wire section 2 of diameter D2 = 4.00R, 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 V along the length L = 2.50 shown in section 2 is 15.0 μV. The number of charge carriers per unit volume is 9.00 × 1028 m-3. What is the...
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...