Question

Formula for specific resistance is

• A. \( \rho = \frac{RA}{L} \)
• B. \( \rho = \frac{LA}{R} \)
• C. \( \rho = \frac{IR}{L} \)
• D. \( \rho = \frac{RL}{A} \)

Hint:

Specific resistance is a fundamental property of a material, used to describe its ability to resist the flow of electric current.

Answer 1

The Correct Option is A

Specific resistance (also known as resistivity) is calculated using the formula \( \rho = \frac{RA}{L} \), where \( R \) is the resistance, \( A \) is the cross-sectional area, and \( L \) is the length of the material. Thus, the correct answer is option (1).