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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

Answer: Option D

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.

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Comments ( 4 )

  1. Dhamma Kakde
    Dhamma Kakde :
    6 months ago

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

  2. Vaibhav Bagul
    Vaibhav Bagul :
    4 years ago

    What is the full form of CRO

  3. Mukul Sharma
    Mukul Sharma :
    4 years ago

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

  4. Mukul Sharma
    Mukul Sharma :
    4 years ago

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

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