Question

draw a graph showing variation of resistivity of an alloy with temp​

Answer 1

Answer:

The resistivity of alloys increases slightly upon increasing temperature.

Explanation:

Resistivity: It is the intrinsic property of a substance that defines how much the material opposes the flow of current through it. It is also defined as the resistance of the conductor with a unit length and unit area of cross-section. Due to its unit length and unit area of cross-section measurement, it doesn't depend on the dimension of the material.

$Resistivity = R\frac{A}{L}$

The unit of resistivity is ohm meter.

Alloys are metals made by mixing metal and one metal or non-metal element. They have more than one type of metal atom.

These atoms have electrons that act as charge carriers.

In alloys, atoms are already arranged in a disordered manner and so they have a high electrical resistivity.

• The increase in temperature produces a very less or insignificant change in electron arrangement, so they have a low depends of resistivity on temperature.

The graph is as shown in the figure: