Question

Why does resistivity of a metal increases with temperature?

Answer 1

$\mathfrak{\huge{\pink{hello}}}$

When the temperature increases the vibrations of the metal ions in the lattice structure increases. This means that the resistivity of the metal increases and thus current flow in the metal is decreased. The resistivity increases means that the conductivity of the material decreases.

Answer 2

Due to increase in temperature, the atoms get the energy to vibrate constantly in their respective places. With these vibrations or oscillations, the mean path and obstacles to the current increases and hence the resisitivity increases.

Hope it helps.

Mark as brainliest.

Cheers!!