Question

a) Gold has a conduction electron density of about 5.90 x 10 28/m-3. A gold wire...

a) Gold has a conduction electron density of about 5.90 x 10 28/m-3. A gold wire is 50.0 m long and 3.00 mm in diameter. If 12.0 V is applied across the two ends of the wire, what will be the resulting current in amperes.

b) Estimate the drift speed of the electrons in part a.

Homework Answers

Answer #1

a) current can be find using below formula

  

  

Where

b)drift speed

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
1. The electron drift speed in a 3.00-mm-diameter gold wire is 6.00 × 10−5 m/s. How...
1. The electron drift speed in a 3.00-mm-diameter gold wire is 6.00 × 10−5 m/s. How long does it take 1 mole of electrons to flow through a cross-section of the wire?
If 2.91×1020 electrons flow through a cross section of a 4.43 mm diameter Gold wire in...
If 2.91×1020 electrons flow through a cross section of a 4.43 mm diameter Gold wire in 5.75 s, then what is the drift speed of the electrons? (The density of conduction electrons in Gold is n = 5.90×1028 1/m3.) (in mm/s)
Part A How many conduction electrons are there in a 1.00 mm diameter gold wire that...
Part A How many conduction electrons are there in a 1.00 mm diameter gold wire that is 50.0 cm long? Part B How far must the sea of electrons in the wire move to deliver -24.0 nC of charge to an electrode? Express your answer with the appropriate units.
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) A 4.7 g wire has a density of 4.8 g/cm^3 and a resistivity of 9...
a) A 4.7 g wire has a density of 4.8 g/cm^3 and a resistivity of 9 × 10^−8 Ω · m . The wire has a resistance of 66 Ω . How long is the wire? Answer in units of m. b) The wire is made up of atoms with molecular mass 75 g/mol. What is the drift speed of the electrons when there is a voltage drop of 132 V across the wire? Assume there is one conduction electron...
A wire 3.31 m long and 6.32 mm in diameter has a resistance of 12.1 mΩ....
A wire 3.31 m long and 6.32 mm in diameter has a resistance of 12.1 mΩ. A potential difference of 27.8 V is applied between the ends. (a) What is the current in amperes in the wire? (b) What is the magnitude of the current density? (c) Calculate the resistivity of the material of which the wire is made.
An aluminum wire with a diameter of 0.105 mm has a uniform electric field of 0.265...
An aluminum wire with a diameter of 0.105 mm has a uniform electric field of 0.265 V/m imposed along its entire length. The temperature of the wire is 45.0° C. Assume one free electron per atom. (a) Use the information in this Table of Resistivities and Temperature Coefficients to determine the resistivity of aluminum at this temperature. ρ = ..... Ω·m (b) What is the current density in the wire? J =....... MA / m2 (c) What is the total...
An aluminum wire with a diameter of 0.095 mm has a uniform electric field of 0.225...
An aluminum wire with a diameter of 0.095 mm has a uniform electric field of 0.225 V/m imposed along its entire length. The temperature of the wire is 45.0° C. Assume one free electron per atom. (a) Use the information in this Table of Resistivities and Temperature Coefficients to determine the resistivity of aluminum at this temperature. ρ =  Ω·m (b) What is the current density in the wire? J =  MA / m2 (c) What is the total current in the...
using only 3 sig figs please A wire 3.60 m long and 8.20 mm in diameter...
using only 3 sig figs please A wire 3.60 m long and 8.20 mm in diameter has a resistance of 15.2 mΩ. A potential difference of 22.1 V is applied between the ends. (a) What is the current in amperes in the wire? (b) What is the magnitude of the current density? (c) Calculate the resistivity of the material of which the wire is made
a) In most metals, there is roughly one conduction electron per atom. Consider a copper wire...
a) In most metals, there is roughly one conduction electron per atom. Consider a copper wire (1 mm diameter) carrying a current of 10 A (these numbers are typical of home wiring) Compute the drift velocity of electrons in this wire. (Is it surprising? Comment, briefly.) b) If I stretch a given piece of copper wire, making it 0.1% longer, how much would this (roughly) change the resistance from end to end? (What assumptions are you making?) c) Suppose I...
ADVERTISEMENT
Need Online Homework Help?

Get Answers For Free
Most questions answered within 1 hours.

Ask a Question
ADVERTISEMENT