0
Want this question answered?
Be notified when an answer is posted
Add your answer:
Earn +20 pts
Are good electrical conductors often good thermal conductors too?
Diamond is one example. In fact it has on of the highest thermal conductivity coefficients measured to date while generally being an electrical insulator.
Does plastic transfer heat easily?
Basic Answer:Electrical insulators do not conduct electricity and are are typically among the poorer heat conductors.Good electrical conductors are metals and metals are typically very good heat conductors.Complicated Answer:The term "insulator" is hardly appropriate in reference to thermal conductivity if one means to say that the material has low thermal conductivity. The difference between good thermal conductor and poor thermal conductors is a factor of perhaps a hundred or for extremely different materials such as air (very poor) and diamond (excellent) is a factor of 100,000. That is modest compared to the difference between poor conductors (rubber) and excellent (copper) which is a factor of a billion billion billion.The connection between good heat conductors and good electrical conductors is a reliable but not a law of nature. Good electrical conductors are good thermal conductors due to the fact that electrons participate in both processes. Nearly free electrons are the reason metals are electrical conductors and contribute a large part of the thermal conductivity. (Diamonds are a peculiar exception.)The connection between poor electrical conductors and poor thermal conductivity is less good and really only a consequence that the electrons are not there to help out.
What is conduction?
There are two kinds of conduction: thermal conduction and electrical conduction.In thermal conduction, thermal energy (heat) transfers through a substance from a hotter region toward a cooler region. For example, when you dip a metal spoon into a cup of tea, the heat from the hot tea will conduct along the spoon so that the handle becomes warm, even though the handle is not in direct contact with the hot tea.In electrical conduction, free electrons pass through a substance, thus enabling an electric current.Some materials are better conductors than others. Most metals are good thermal conductors, and certain metals (copper, aluminum) are very good electrical conductors. When a material is an exceptionally poor conductor, we call it an insulator. Styrofoam is a good thermal insulator, and glass is a good electrical insulator.
Why are good thermal conductors also good electrical conductors?
Metals are both good heat conductors and also good electrical conductors because of the looseness of outer electrons in metal atoms. A substance can absorb heat energy by the process of conduction, convection, and radiation.
What are four forms of energy related to change in matter?
The answer i got is Forms of energy related to changes in matter include thermal energy, chemical energy, electromagnetic energy, and electrical energy.
What type of energy can be moved through conductors?
electrical
What large group of materials are good thermal conductors and good electrical conductors?
metals
What type of materials are good thermal and electrical conductors?
cooper
Do metals have good thermal and electrical conductors?
Generally yes.
Which metal acts as an insulator?
Metals are conductors, not insulators. Both electrical and thermal conductors.
Are good electrical conductors often good thermal conductors too?
Diamond is one example. In fact it has on of the highest thermal conductivity coefficients measured to date while generally being an electrical insulator.
Where do the elements that are good thermal and electrical conductors appear on the periodic table?
These elements are metals, to the left.
What large group of materials are good thermal conductors and electrical conductors?
transition metals check on google the periodic table of elements by Christian Okutu
What large materials are good thermal conductors and good electrical conductors?
from wiedemann franz law we know that thermal conductivity/electrical conductivity=constant that is sigma inv. proportional to k thus a material having large electrical conductivity has low thermal conductivity and moreover we know R=pL/A p=RA/L 1/P=L/RA i.e lower area means greater conductivity(electrical) and lower thermal conductivity
What has the author Vincent T Morgan written?
Vincent T. Morgan has written: 'Thermal behaviour of electrical conductors' -- subject(s): Bus conductors (Electricity), Conduction, Electric cables, Electric conductors, Heat, Overhead electric lines, Powerline ampacity, Thermal properties
Why are alkali metals good heat conductors and electrical conductors?
Short Answer:For all practical purposes, any metal will be both a good conductor of electricity and a good conductor of heat. Normally, the pure form of the alkali metal does conduct electricity and is also a good thermal conductor, both characteristics being a consequence of the conduction electrons in the bulk material.Long Answer:In this case, if we use the physics definition of metal and not the chemistry definition, then a metal is defined as a material that conducts electricity well. These electrical conductors usually have a higher thermal conductivity because the same electrons that are participating in electrical conduction are also participating in thermal conduction. In general terms then, good electrical conductors are good thermal conductors with a few notable exceptions, e.g. diamond.Caveat:In chemistry, a large swath of the period table labels atoms to be metals and this is not actually a proper characterization related electrical or thermal properties. These properties do not depend on the individual atoms but rather these physical properties are only manifested in bulk materials and depend on temperature, composition, crystal or amorphous structure, etc. Some materials, for instance, will change from insulating to conducting under pressure.
Which is the best conductor of heat between gold and lead?
When we consider the two elements gold and lead, we find that gold has a (ball park) thermal conductivity of about ten times that of lead. If you guessed that gold is about ten times as good a conductor of electricity as lead (based on the information presented regarding thermal conductivity), you'd be on target. In general, thermal and electrical conductivity both "track" from metal to metal. Good electrical conductors are generally good thermal conductors.
