Question

Calculate the drift velocity (in m/s) of electrons in a 6 gauge copper wire (which has a diameter of 4.115 mm) carrying a 17.8 A current, given that there is one free electron per copper atom. The density of copper is 8.80 ✕ 103 kg/m3. (Indicate the direction with the sign of your answer.) -1.61e-6 Incorrect: Your answer is incorrect.

correct answer: -0.0001 m/s

Answer #1

Calculate the drift velocity (in m/s) of electrons in a 6 gauge
copper wire (which has a diameter of 4.115 mm) carrying a 15.3 A
current, given that there is one free electron per copper atom. The
density of copper is 8.80 ✕ 103 kg/m3.
(Indicate the direction with the sign of your answer.)
m/s

Calculate the drift velocity (in m/s) of electrons in a 6 gauge
copper wire (which has a diameter of 4.115 mm) carrying a 15.8 A
current, given that there is one free electron per copper atom. The
density of copper is 8.80 ✕ 103 kg/m3. (Indicate the direction with
the sign of your answer.) . m/s

Calculate the drift velocity (in m/s) of electrons in a 15 gauge
silver wire (which has a diameter of 1.449 mm) carrying a 23.6 A
current, given that there is one free electron per silver atom. The
density of silver is 1.05 ✕ 104 kg/m3. (Indicate the direction with
the sign of your answer.) 1.42 Incorrect: Your answer is
incorrect.
Correct answer: -0.00153 m/s

Calculate the drift velocity (in m/s) of electrons in a 14 gauge
silver wire (which has a diameter of 1.627 mm) carrying a 16.6 A
current, given that there is one free electron per silver atom. The
density of silver is 1.05 ✕ 104 kg/m3. (Indicate the direction with
the sign of your answer.)

Calculate the drift velocity of electrons in a copper wire which
has a diameter of 3.256 mm and carrying a 15.0–A current, given
that there is one free electron per copper atom. The density of
copper is 8.80×103 kg/m3.

A 10 gauge copper wire carries a current of 12 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

Calculate the average drift speed of electrons traveling through
a copper wire with a crosssectional area of 30 mm2 when carrying a
current of 30 A (values similar to those for the electric wire to
your study lamp). Assume one electron per atom of copper
contributes to the current. The atomic mass of copper is 63.5 g/mol
and its density is 8.93 g/cm3 . Avogadro’s number is 6.022 × 1023
and the fundamental charge is 1.602 × 10−19 C. Answer...

Consider a copper wire with a diameter of 1.67 mm.
(a) What is the drift speed of the electrons in the copper wire
when a current of 14.0 A flows through it? Assume that each copper
atom contributes one free electron to the metal. The density of
copper is 8.92 g/cm3.
(b) How does this drift speed compare to the random rms speed of
an electron at 20.0°C? To make this comparison, determine the
random rms speed of an electron...

2 Drift Velocity The average velocity of electrons in a material
with a scattering time τ is vd = eE me τ. The scattering time also
determines the resistivity of the material: ρ = me ne2τ . Here, n
is the free electron density of the material — the number of free
electrons per cubic meter. (a) Estimate the free electron density
in copper. There is one free electron per copper atom. The mass
density of copper is 8.92 g/cm3...

There is a wire made of copper with a diameter of 3.26 mm. A
current of 20.0 A was applied to this wire.
Answer the following question assuming that the electron density of
copper is n = 8.47 × 1028 m-3.
(1) Find the current density.
(2) Find the electron drift velocity.
(3) When the resistivity of copper is 1.70 × 10-8 Ω·m, find the
voltage drop that occurs along the length of this wire.
(4) Find the electron mobility.

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