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# On which of the following factors does the resistivity of a material depend ?

A. Resistance of the conductor

B. Area of the conductor section

C. Length of the conductor

D. All of the above

### Solution(By Examveda Team)

The resistivity $$\rho$$ of a material depends on multiple factors, and all of the mentioned options contribute to it:

Resistance of the conductor: The resistivity is directly related to the resistance through the formula $$R = \rho \frac{L}{A}$$, where $$R$$ is the resistance, $$\rho$$ is the resistivity, $$L$$) is the length of the conductor, and $$A$$ is the area of the conductor section.
Area of the conductor section: The area of the conductor section $$( A )$$ is present in the denominator of the resistance formula. As the area increases, the resistance decreases, and vice versa.
Length of the conductor: The length of the conductor $$( L )$$ is also present in the numerator of the resistance formula. As the length increases, the resistance increases, and vice versa.

Therefore, the correct answer is Option D: All of the above.

1. It is dependent on nature of material.

2. wrong answer because resistivity depend upon 1.TEMPRATURE 2. PRESSURE 3.TYPE OF MATERIAL

3. What is the full form of CRO

4. This is not right because resistivity is a bulk property so it doesnt depends on any physical quantity

5. This is wrong because resistivity is a bulk property so it doesn't depends on any physical quantity

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