Drift current density and conductivity, Electrical Engineering

Drift Current Density and Conductivity:

Consider a conductor of length / meters and cross sectional area a square meters, as shown in Fig. Let the number of free electrons available per m3 of the conductor material i.e., electron density be n and E be the applied electric field. Due to the applied electric field, let axial drift velocity of the electrons be v meters / second. The number of electrons crossing any plane P of cross sectional area a in one second = n x (v x a). If e be the charge of each electron, then the total charge carried by electrons in one second = e. n. v. a. The electric current I, defined as the charge flowing per second across any normal plane of the conductor, is given as. Equation is well known as Ohm's law relating conduction current density and applied electric field or applied voltage.

Posted Date: 2/8/2013 2:47:08 AM | Location : United States







Related Discussions:- Drift current density and conductivity, Assignment Help, Ask Question on Drift current density and conductivity, Get Answer, Expert's Help, Drift current density and conductivity Discussions

Write discussion on Drift current density and conductivity
Your posts are moderated
Related Questions
Static  scherbius  Drive By using  this scheme, below and above  synchronous speed can be obtained for an induction motor. There are  two possible  configurations to obtain  s

Q. The truth table for F(A,B,C) = mi (2, 3, 4 5) is as follows: (a) Express F in a canonical sum-of-products form. (b) Minimize F in an SOP form, and obtain a possible realiz

What is interfacing? An interface is a shared boundary among the devices which includes sharing information. Interfacing is the process of making two dissimilar systems communi

Name the materials used in case of Bimetals and give reasons. Bimetals : Alloy of nickel and iron along with low value of coefficient of thermal expansion are utilized as

Phenomenon - Fet operation: For either improvement- or depletion-mode devices, at drain-to-source voltages very much less than gate-to-source voltages, changing the gate volta

Explain the Limiting the Spectrum This low-pass filter is known an anti-aliasing filter. These filters are originated at the input to most applications. Since they are required

Q Point charges, each of √4πε0 C, are located at the vertices of an equilateral triangle of side a. Determine the electric force on each charge.

please, how do i design a linear phase stable recursive digital filter

Q. A synchronous motor operates continuously on the following duty cycle: 50 hp for 8 min, 100 hp for 8 min, 150 hp for 10 min, 120 hp for 20 min, and no load for 14min. Specify th

High Level Language ( third Generation Language ) The difficulties of low  level  languages are overcome  by high  level languages. In  assembly  language  mnemonics  were used