Electrical materials, Physics

Electrical materials:

Materials which allow an electric current to flow easily are known as conductors and those which prevent the flow of an appreciable current are known as insulators. Conductors and insulators are used in electrical circuits to provide paths for and to control the flow of, electric current. Practically all normal materials are either good conductors or good insulators. There are, however, a few materials which fall between these two categories and these are called semiconductors. Semiconductors will be studied in detail when we begin the electronics phase of the course.

The best electrical conductor is silver, but for most purposes its high cost is prohibitive so copper is the standard conductor material. Aluminium is an alternative, but it is not such a good conductor. Brass, which is harder than copper, is commonly used for terminals, switches etc. Tungsten and nickel are used in the construction of lamps and thermionic valves.

Posted Date: 9/13/2012 1:19:08 AM | Location : United States







Related Discussions:- Electrical materials, Assignment Help, Ask Question on Electrical materials, Get Answer, Expert's Help, Electrical materials Discussions

Write discussion on Electrical materials
Your posts are moderated
Related Questions
A filter of the form G ( z )   =  z 2 /( z - p )( z - p ) with p = re 4ω n     will be studied. With r = 0 . 95 and ω n   = Π/10 , plot the time response to

example of problems of vector and scalar with solution

Q. When a radar gun utter the pitch is 90 miles per hour at what point in the balls travel to home plate is the radar gun measuring the velocity? Answer:- The measu

why phase is defined only for periodic motion ?

Q. Find the electric potential at a distance 0.09 m from a charge of 4 X 10 -7 C. The electric potential V = ( 1/4πεo ) q /r = ( 9 X 10 9 X 4 X 10 -7 )/ 9 X 10 -2 = 4 X 10



Define Poisson Distribution in Ideal Gas? Consider a monatomic ideal gas of total Ñ molecules in a volume V ˜ Show that the probability, P N for the number N of mole


Q. Illustrate what is dissimilar between secondary electron image and back scattered electron image? Answer:- Secondary electron images demonstrate topography of a sample.