Question

an aluminium wire having a cross-sectional area A = 4 x 10^-6 m^2 carries a current...

an aluminium wire having a cross-sectional area A = 4 x 10^-6 m^2 carries a current I = 5 A. find the drift speed (vD) of the electrons in the wire. The density of aluminium is 2.7 g/cm^3 and its molar mass = 27 g/mol. Assume that one conduction electrons is supplied by each atom. Avogadro's constant is 6.023 x 10^23 atom/mole and e = 1.6 x 10^-19 C.

Homework Answers

Know the answer?
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Not the answer you're looking for?
Ask your own homework help question
Similar Questions
An aluminum wire having a cross-sectional area of 3.10 ✕ 10−6 m2 carries a current of...
An aluminum wire having a cross-sectional area of 3.10 ✕ 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 gauge copper wire carries a current of 12 A. Assuming one free electron per...
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
A copper wire of cross sectional area A=1.7 mm2 and Lenght L=1 m carries a current...
A copper wire of cross sectional area A=1.7 mm2 and Lenght L=1 m carries a current of I=6.4 A at the temperature of T1= 20 0C. a) How many electrons pass through a cross section of the wire in each second? b) What is the resistance of the wire ? c) What is the potential difference between the ends of the wire? d) What is the resistance of the wire at the temperature of T2= 100 0C? (r=1.7x10-8 W.m, a=7x10-3...
A 7.2 mm diameter conducting wire carries a current of 3.8 A. If the density of...
A 7.2 mm diameter conducting wire carries a current of 3.8 A. If the density of the conduction electrons (free electrons) in the wire is n=19.6×1028m-3, determine the magnitude of the drift velocity of the electrons within the wire. Express your answer in units of μm/s (micrometers per second) using one decimal place. Take the charge of the electron e=1.6×10-19C.
A copper wire 100m long with cross-sectional area of 2x10^-4 cm^2 is heated from room temperature...
A copper wire 100m long with cross-sectional area of 2x10^-4 cm^2 is heated from room temperature of 25 C to 200 C. Find a) The initial resistance of wire b) The increase in resistance from 25 to 200 C c) The drift speed of the “electron group” in the wire, if the current is 3A and density of electrons is 8.5x10^28 electrons /m 3 d) The voltage drop across the wire resistor for this current of 3A e) The power...
What current in a copper wire with a cross-sectional area of 7.10 10-7 m2 would result...
What current in a copper wire with a cross-sectional area of 7.10 10-7 m2 would result in a drift speed equal to 5.09 10-4 m/s?
Assume that a gold wire 0.32 mm in diameter carries one mobile electron per atom. The...
Assume that a gold wire 0.32 mm in diameter carries one mobile electron per atom. The mass density and the molecular weight of gold are 1.89×104 kg/m3 and 197.0 g/mol, respectively. Calculate the drift speed of the electrons in this wire when it carries a current of 2.44 A. (ans. 3.28×10-3 m/s)
A copper wire is 8.00 m long, and has a cross-sectional area of 1.00 × 10–4...
A copper wire is 8.00 m long, and has a cross-sectional area of 1.00 × 10–4 m2. This wire forms a 1turn loop in the shape of a square and is then connected to a battery that applies a potential difference of 0.100 V. If the loop is placed in a uniform magnetic field of magnitude 0.400 T, what is the maximum torque that can act on it? The resistivity of copper is 1.70 × 10–8 Ω · m. Define...
A copper wire is 8.00 m long, and has a cross-sectional area of 1.00 × 10-4...
A copper wire is 8.00 m long, and has a cross-sectional area of 1.00 × 10-4 m2. This wire forms a 1turn loop in the shape of a square and is then connected to a battery that applies a potential difference of 0.100 V. If the loop is placed in a uniform magnetic field of magnitude 0.400 T, what is the maximum torque that can act on it? The resistivity of copper is 1.70 × 10-8 Ω • m. Define...
A 7.54 m long copper wire (ρcopper = 1.69×10-8 Ω.m) has a cross sectional area 6.96...
A 7.54 m long copper wire (ρcopper = 1.69×10-8 Ω.m) has a cross sectional area 6.96 mm2. If the wire is reshaped to twice its original length with no change of volume, find its new wire resistance.
ADVERTISEMENT
Need Online Homework Help?

Get Answers For Free
Most questions answered within 1 hours.

Ask a Question
ADVERTISEMENT