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
what is south africas perspective?

Define a voltmeter A voltmeter is an instrument used to measure p.d. and must be linked in parallel with the part of the circuit whose p.d. is required.

Normal 0 false false false EN-IN X-NONE X-NONE

Can I get some ideas for power system stability simulation using Matlab?

Q. For a 10-bit R-2R ladder-network D/A converter with an MSB resistor value of 10 k, what is the value of the LSB resistor?

A three-phase transposed line is composed of one ACSR conductor per phase with flat horizontal spacing of 11 meters as shown in Figure (a). The conductors have a diameter of 3.625

Short-Term Measures for Technical Loss Reduction The short-term measures involve measures needs for immediate improvement and reduction of losses within the system. These are

Write a brief note on MMX technology. MMX (Multimedia extensions) technology adds 57 new types of instructions to the Pentium - 4 microprocessors instruction set. The MMX tech

Next, let us consider the case of a balanced delta-connected load with impedance of 5 45° supplied by a three-phase, three-wire 100-V system, as shown in Figure (a). We shall dete

1. A very narrow laser beam in air is shone into a sphere of solid glass that has a uniform refractive index n>1 and radius ? . The beam makes an angle a in air with the normal to