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What are the differences between conductors semiconductors and insulators?
Wiki User
∙ 10y ago
Materials are classified as being conductors, semiconductors, or insulators according to their resistivity.
Resistivity is defined as being 'the resistance of a unit length of a substance of uniform cross section'. In the SI system this equates to the resistance across opposite faces of a one-metre cube of that substance, and is expressed in ohm metres. Note that a one-'metre cube' is not the same thing as a 'cubic metre'.
So, for
conductors: resistivity range 10-8 - 10-6 ohm metres
semiconductors: resistivity range 10-6 - 107 ohm metres
insulators: resistivity range 107 - 1023 ohm metres
To appreciate the difference between these astronomical figures, consider the following:
A 25-mm length of mica (an insulator) of cross-sectional area 2.5 mm2 cross-sectional area will have a resistance of 100 x 1015 ohms. A copper wire, having the same cross-sectional area and resistance, will have a length of 14.29 x 1018 metres! That works out to: 14 290 000 000 000 000 kilometres long!!!!
Wiki User
∙ 10y ago
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Why do you use semiconductor why not conductors and insulators by changing their properties?
We use semiconductors instead of conductors and insulators by changing their properties because the properties of a semiconductor lies between that of a good insulator ant that of a good conductor. Any of the materials obtained depends on the level of doping.
What is the difference between conduct and insulate?
Insulation is keeping the heat inside, trapping it and not letting out. Conduction is letting a flow, such as electricity, pass through the material. for example, metal is a wonderful conductor of heat and electricity, but a bad insulator. However, wool is a good insulator and a bad conductor. :) hope that helps!
Gfci circuitry checks for differences in current between the?
...hot and neutral conductors. (Sounds a lot like a homework question. If so, spend a little more time reading the textbook!)
Does capacitance exists between two current carrying conductors?
Capacitance exists between any two conductors, current carrying or not.
What do you call the material that covers a conductor?
Most wire conductors are covered with an insulator. This material is intended to prevent accidental connection between multiple conductors or between conductors and other objects that may conduct electrical or electronic signals (including humans).
Substance in between conductors and insulators used in transistors?
Semiconductors
Differences between conductors and insulators?
Conductors let energy (such as electricity and heat) flow through them easily while insulators do not.
Are scissors conductors?
They are Conductors, not much for insulation though. Differences between conductors and insulators? Conductors let energy such as electricity .
Why do you use semiconductor why not conductors and insulators by changing their properties?
We use semiconductors instead of conductors and insulators by changing their properties because the properties of a semiconductor lies between that of a good insulator ant that of a good conductor. Any of the materials obtained depends on the level of doping.
Why semiconductor is called semiconductor not semiinsulator?
The purpose of semiconductors is to control the amount of conduction, not the amount of insulation.
What are the differences between insulators and conductors?
A conuctor conducts electricity e.g.copper whilst an insulator does not allow electricity to go through e.g. plastic
Creepage distance in insulators?
It is the shortest distance between the conductors measured along with the surface of insulators.
What is the differences between conductors semiconductors and insulators.?
An insulator does not conduct electricity or heat whatsoever. (Eg: Wood) A semi-conductor conducts electricity / heat but with imperfect efficiency. (Eg: Steel) A conductor is simply a term for something that is not an insulator. A super-conductor conducts heat and electricity with almost perfect efficiency.(Eg: Gold)
How do you know the difference between conductors and insulators?
Yes I do, a thermal insulator keeps in the heat
What are the classification of materials according to electrical conductivity?
Most substances fall into two categories - conductors and insulators. Conductors are those which electricity can pass through relatively easily. Metals are the usual example, but other substances such as graphite and polar liquids such as water are also good conductors. Insulators are poor conductors: those that electricity cannot pass through easily. Most plastics are insulators. Some substances fall in between: these are semiconductors, which allow electricity through in some instances, but not in others. This property makes them very useful in electronics. Some substances can be such good conductors that, under some circumstances, they can allow electricity to pass through them with no resistance at all. These are called superconductors.
Explain the difference between conductors semiconductors and insulators?
Metals are good conductors of electricity. Insulators are bad conductors of electricity. Similarly, semiconductor devices are partial conductors of electricity means their conductivity lies between conductors and insulators.
Are scissors a conductor?
Scissors are Conductors, DUHHHHH
