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How does the electrical conductivity of a semiconductor vary with temperature?
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Thermal conductivity temperature to an object that has a?
The thermal conductivity temperature of different objects vary from one object to another. When the two objects are placed together, there will be a change in temperature through heat conduction.
How will molar conductivity vary with concentration or temperature?
molar conductivity involves concentration of electrolyte also....but electrolytic conductivity doesn't
What is temperature coefficient for insulator?
"Temperature coefficient" means, how does a certain physical quantity vary, depending on the temperature. In this case, the physical quantity in question is probably the electrical resistance, or the electrical resistivity.
How does resistance of metal vary with temperature?
The resistance of metals rises with increasing temperature. The resistance semiconducting materials falls with increasing temperature.
Does the temperature of ice vary?
Yes. One ice cube could cool to a lower temperature than another.
Can you represent electrical conductivity by finding its electrical resistance?
Conductivity is the reciprocal of resistivity, and is expressed in siemens per metre (S/m). Resistivity and, therefore, conductivity vary with temperature so are usually quoted at a specified temperature.Resistance is expressed in ohms. If you accurately measure the resistance, length, and cross-sectional area of a conductor, then you could determine its resistivity and, from that, its conductivity.
What combination of factors is most suitable for increasing the electrical conductivity of metals?
Resistivity is a constant for any particular material, and independent of that material's physical dimensions or shape. However, it does vary with temperature which is why resistivity is always quoted at a particular temperature. Variations in resistivity due to temperature change is the reason that the resistance of a material varies with temperature. In SI, resistivity is expressed in ohm metres.
Thermal conductivity temperature to an object that has a?
The thermal conductivity temperature of different objects vary from one object to another. When the two objects are placed together, there will be a change in temperature through heat conduction.
How will molar conductivity vary with concentration or temperature?
molar conductivity involves concentration of electrolyte also....but electrolytic conductivity doesn't
What is temperature coefficient for insulator?
"Temperature coefficient" means, how does a certain physical quantity vary, depending on the temperature. In this case, the physical quantity in question is probably the electrical resistance, or the electrical resistivity.
Use of a zener diode in temperature sensing applications?
All semiconductor are sensitive to temperature. Some vary greatly some not so great. Zeners are not one of class as greatly. Zeners do change voltage slightly as temperature vary like all active devices. But to use one as a temperature sensor is bad idea.
HOW DOES conductance vary with temperature?
yes temperature affects the conductivity of conductor and semi conductors but in case of insulators temp. has no effect. While we talk about conductors as temp. increases conductivity decreases ,the question is why, look if we take an example of copper the conductivity is so high at normal temperature because the molecules in the copper are so close but when we increase temperature the inter molecule distance increases and result is increasing resistance of the copper, and as we know that resistance is inversely proportional to the conductivity. So in the case of conductor, temperature affects the conductivity. Hey may be you are familiarize with the new aspect called superconductivity, the same effect is here while the temperature of a conductor is so low approximately -273degree the conductor becomes superconductor because Resistance become so low (can say approx. 0 but not exact 0). You should know that most metals increase their electrical resistivity by about 0.005 per degree. Good luck Rjames007
Does copper possess high or low thermal conductivity?
Copper has a high thermal conductivity, not low. This is a good generalization of any metal, although they vary in conductivity.
Gas oven temp electric oven temp?
You have not specified your question well enough. If you're looking for their general comparisons, here they are: Gas Oven Temperature vs Electrical Oven Temperature # Gas oven temperature can vary slightly more than electrical oven's. # When certain holes in a gas oven is is clogged with oil, they may cause explosion. # Electrical oven's temperature can be more uniform.
What are the difference between semiconductors and semimetals?
A conductor is just that - something that conducts electric current. A semiconductor, however, is a material that can be and is used because by doing some things to it, we can cause its resistance to vary dramatically over a fairly wide range of values. We can cause it to conduct with little resistance, and we can cause it to resist current flow completely and prevent current from flowing. The material is a semiconductor, and it "sort of" conducts - either well or poorly or something in between, depending on how the device is made and on what we tell it to do. Conductor will pass electrons by the laws of electrical conductivity. Semiconductor will pass electrons basically only one way.Conductors, like copper, are materials that simply conduct electricity from point A, such as the negative terminal of a battery, to point B.Semiconductors are materials that conduct electricity from point A to point B, but have high high resistance. Many conductors can be modified to have unique properties when electricity is applied, such as in transistors. Put simply, semiconductors have an electrical conductivity somewhere between that of conductors (gold, copper) and insulators (wood, rubber).A conductor allows an electric current to flow through it equally well in either direction. The amount of current which flows depends only on the amount of resistance of the conductor and on the amount of voltage applied across it. The direction of flow can always be considered as being from the positive to the negative pole of the source of the voltage applied, so the direction of flow through a conductor is always determined by which end of the conductor is connected to the positive pole of the source. A semiconductor allows an electric current to flow very strongly in one direction (this is known as the forward current) and very weakly in the opposite direction (which is known as the reverse current). The amounts of current which flow in each direction depend partly on the amount of the voltage applied but mainly on the forward resistance (which is relatively low) and the reverse resistance (which is always very high). So, unlike a conductor, the flow of current through a semiconductor is not the same amount of current whichever way the voltage is applied. The direction in which a semiconductor allows the forward current to flow depends on whether it is a p-type semiconductor or an n-type semiconductor. How are semiconductors made? Certain elements, such as Germanium or Silicon, are not naturally semiconductors but can be made into semiconductors by melting them and adding very small amounts of other chemicals. This process is called doping. Whether a p-type semiconductor or an n-type semiconductor is produced depends on the type of doping chemical used.
What is the name of an instrument used to vary electrical resistance?
Rheostat is the name of an instrument used to vary electrical resistance.
Can silicon conduct heat?
Pure silicon's resistance is quite high.It is an extremely important semiconductor;it is doped with boron, phosphorus, or arsenic,to increase its conductivity, it is used in various electronic circuit and switching devices, including computer chips, transistors, and diodes. .In fact ,silicon is nonmetallic to semimetallic chemical element,
