Question

011 Define resistance and resistivity and also give relation between them


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Answer 1

Answer:

The measure of a material's ability to oppose the flow of electric current through it is called resistance and it is denoted by R. Resistivity is defined as the resistance of a material of unit length and unit cross section area. It is denoted by ρ. ... The resistivity of a material depends on temperature.

Hope it helps. Jai Shri Krishna

Answer 2

Explanation:

The measure of a material's ability to oppose the flow of electric current through it is called resistance and it is denoted by R.

Resistivity is defined as the resistance of a material of unit length and unit cross section area. It is denoted by ρ. It is a fundamental property of a material and tells how strongly the material is opposing the current.

The resistance is related to resistivity by the relation,

R=ρAl

The resistivity of a material depends on temperature. It increases with the increase in temperature and decreases with the decrease in temperature.

Thus, the resistance of a material also increases or decreases with the increase and decrease in temperature.