Wednesday
April 1, 2015

Homework Help: physics

Posted by pam on Saturday, March 10, 2012 at 10:06pm.

An iron wire has a cross-sectional area equal to 1.20 10-5 m2. Carry out the following steps to determine the drift speed of the conduction electrons in the wire if it carries a current of 34.0 A.
(a) How many kilograms are there in 1.00 mole of iron?
1 kg/mol

(b) Starting with the density of iron and the result of part (a), compute the molar density of iron (the number of moles of iron per cubic meter).
2 mol/m3

(c) Calculate the number density of iron atoms using Avogadro's number.
3 atoms/m3

(d) Obtain the number density of conduction electrons given that there are two conduction electrons per iron atom.
4 electrons/m3

(e) Calculate the drift speed of conduction electrons in this wire.
5 m/s

Answer this Question

First Name:
School Subject:
Answer:

Related Questions

physics - A copper wire has a circular cross section with a radius of 3.75 mm. ...
physics - A copper wire has a circular cross section with a radius of 3.75 mm. ...
Physics/Electricity - An aluminum wire carrying a current of 9.0 A has a cross-...
physics - A net charge of 47 mC passes through the cross-sectional area of a ...
physics A - A net charge of 47 mC passes through the cross-sectional area of a ...
physics - A net charge of 47 mC passes through the cross-sectional area of a ...
physics - A net charge of 47 mC passes through the cross-sectional area of a ...
physics - If a metal wire carries a current of 79 . 0 mA, how long does it take ...
physics - If a metal wire carries a current of 130 mA, how long does it take for...
College Physics - How do I solve this problem: A particular wire has a current ...

Members