Electrical Conducting Materials Pdf

Conductors semiconductors and imperfect insulators.

Electrical conducting materials pdf.

It is silvery white in colour and it has a soft texture. 13 2 conducting materials 2 1 introduction materials which allow current to pass through them easily are called conducting materials e g. These material used as conductors for all kind of windings required in electrical machines apparatus and devices. Introduction effect of a dielectric on the behavior of a capacitor polarization the dielectric constant of monatomic gases frequency dependence of permittivity.

Conductor s use is identified and made distinguishable from the other circuit conductors is the use of color coding. See electrical conduction for more information on the physical mechanism for charge flow in materials. Expression for the electrical conductivity. E j its unit is 1m 1 or sm 1.

Some of low resistivity or high conductivity materials and their resistivity. These material are also used as conductor in transmission and distribution of electrical energy. Acceptable color coding includes the method required by the national electrical code section 210 5. Patterning conductive materials on fabric substrates to form electrical circuits and to achieve conductivity gradients have been reported in the literature.

Silver copper has the same electrical conductivity as ordinary high. Electrical conductivity is defined as the rate of charge flow across unit area in a conductor per unit potential voltage gradient. It is often used in wiring and making cable fig. Other materials non conducting materials lack mobile charges and are called insulators.

Pdf conducting materials may be classified into three groups. Introduction to materials science chapter 18 electrical conductivity 3 basic laws and electrical properties of metals ii the electrical conductivity the ability of a substance to conduct an electric current is the inverse of the resistivity. Conductor materials while many conductors are metallic there are many non metallic conductors as well including all plasmas. These types of materials are bad conductors of current.

When an electrical field e is applied to an electron of charge e of a metallic rod the electron. Of metals electrical conducting materials thermal properties thermal conductivity of metals thermoelectric effects. σ 1 ρ since the electric field intensityin the material is e v l. Module ii 10 hours dielectric properties.

26 27 processes that have been employed to form a patterned conductive path on fabric surfaces include deposition of polymeric or non polymeric conducting materials and subsequent etching. Therefore this type of conducting material is mostly used in electrical wiring. 2 2 resistivity and conductivity electrical resistivity or specific resistance. Insulating materials insulating materials are used for insulating purpose.