Electric Resistance of Conductors & Semiconductors with Temp Change

[noor.lalu]

1.What happens to the electrical resistance of conductors, semiconductors, with increase in temperature? And explain why?

 

[Bloodthunder]

You could have googled.

http://en.wikipedia.org/wiki/Electrical_resistance_and_conductance#Temperature_dependence

 

[lionelwang]

For conductors, the resistance will increase with T, while for some semiconductors, the resistance may decrease with T, which results from the agitation of the electrons in the valence band

 

[noor.lalu]

For conductors, the resistance will increase with T, while for some semiconductors, the resistance may decrease with T, which results from the agitation of the electrons in the valence band

thank u soo much now i clearly understand

 

[rwisz]

The electrical resistance of conductors and semiconductors typically increases with an increase in temperature. This is because as the temperature increases, the atoms in the material vibrate more vigorously, causing more collisions between the electrons and the atoms. These collisions impede the flow of electrons, which in turn increases the resistance. In conductors, the increase in resistance is due to an increase in the number of collisions between the free electrons and the positively charged ions in the material. In semiconductors, the increase in resistance is due to an increase in the energy of the electrons, making it more difficult for them to move through the material. Additionally, the number of charge carriers in semiconductors can also decrease with an increase in temperature, further contributing to the increase in resistance. Overall, the increase in temperature causes a disruption in the flow of electrons, resulting in a higher electrical resistance for both conductors and semiconductors.