How does the resistance of a conductor vary with the increase of temperature ?

The resistance of a conductor is

How does the resistivity of a conductor vary with temperature?

How does the resistance of a conductor depend on its length?

How does the solubility of a solute vary with increase in temperature if the dissolution process is exothermic?

Read the following statements carefully Y : The resistivity of a semiconductor decreases with increase of temperature Z : In a conducting solid, rate of collisions between free electrons and ions increases with increase to temperature. Select the correct statement(s) from the following :

Specific resistance of a conductor material increases with

The resistance of a metallic conductor increases with temperature, because