Question

When a object is heated both it demensions and its resistivity increase,is the increase in resistivity likely to be a consequence of the increase in length ?

Answer 1

Answer:

When a metal object is heated both its dimension and resistivity increases. Is the increase in resistivity likely to be consequence of the increase in length? Ans. The Resistivity is equal to RA/L .

When the temperature is increased, the atoms of the material vibrate and it makes the valence electrons present in the valence band to shift to the conduction band. ... When the conductivity of the material increases, it means that the resistivity decreases and so the current flow increases.

As temperature rises, the number of phonons increases and with it the likelihood that the electrons and phonons will collide. Thus when temperature goes up, resistance goes up. For some materials, resistivity is a linear function of temperature. The resistivity of a conductor increases with temperature.

Explanation:

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