Question

define the term resistivity of material.​

Answer 1

Answer:

The electrical resistivity of a materialis also known as its specific electrical resistance. It is a measure of how strongly a material opposes the flow of electric current. A definition ofresistivity is the electrical resistance per unit length and per unit of cross-sectional area.

Answer 2

Answer:

Explanation:

WHAT IS RESISTIVITY?

The physical property of wire which only depends upon the type of wire that is the nature of wire taken is called resistivity. In one words we can say that resistivity depends on the

• Nature of the conductor

Resistivity is required to make resistors of the circuits.

WHAT IS THE BEST MATERIAL FOR RESISTORS?

Nickel has very high resistivity power and used to make resistors.

FORMULAS AND DERIVATION

• The formula is

• $\textsf{Resistance = Rho*Length/Area}$

• Where length means length of wire
• And area means area of wire
• As resistance is directly proportional to Length
• More the length more resistance
• And resistance is inversely proportional to area
• Less area , more resistance
• To make it equal we use resistivity or rho as a constant to derive the formula.
• SI unit of Resistance is ohm.
• SI unit of resistivity is Ohm Metre.