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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wrong answer because resistivity depend upon 1.TEMPRATURE 2. PRESSURE 3.TYPE OF MATERIAL
What is the full form of CRO
This is not right because resistivity is a bulk property so it doesnt depends on any physical quantity
This is wrong because resistivity is a bulk property so it doesn't depends on any physical quantity