Thermistors and superconductor

Thermistors and superconductor –

what do you mean by the term Thermistor and superconductor ? How a Thermistors is different from ordinary resistance and what are the applications of Thermistors and super-conductors?

Before to learn about this topic Thermistors and superconductor , students must have to learn about resistance and resistivity;

To learn about resistance and resistivity click here-

Thermistors   –

It is a heat sensitive device whose resistivity changes very rapidly with change of temperature . The temperature coefficient of resistivity of a thermistors is very high , which may positive or negative . a thermistors can have a resistance in the range of 0.1 ohm – 107 ohm .

Uses of thermistors –

Thermistors are used in industry as temperature control unit , remote sensing, picture tube and to measure very high temperature change .

A thermistors differs from an ordinary resistance in the following ways –

(i) The temperature coefficient of resistivity of a thermistors can be both positive and negative .

(ii) The resistance of thermistors changes very rapidly with change in temperature

(iii) temperature coefficient of resistivity of a thermistors is very high .

 

Super-conductivity

Super-conductivity is the property due to which a metal alloy or metal oxide shows zero resistance at a very low temperature . or in another words we can say that certain metals or alloys at very low temperature lose their resistance and becomes zero .

Application of super-conductors –

(i) It is used to produce very high speed computers ,

(ii) it is used to transmission of electric power ,

(iii) It is used to make very strong electromagnet ,

(iv) It is used in material science research and high energy particle .

 

To learn about Ohm’s law and prove of Ohm’s law and limitations of Ohm’s law; click here-

 

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