Question

What is the resistance of a wire of length $ L = 2 \, \text{m} $ and cross-sectional area $ A = 1 \times 10^{-6} \, \text{m}^2 $ made of a material with resistivity $ \rho = 1.5 \times 10^{-7} \, \Omega \, \text{m} $?

• A. \( 3 \times 10^{-7} \, \Omega \)
• B. \( 3 \times 10^{-6} \, \Omega \)
• C. \( 2 \times 10^{-7} \, \Omega \)
• D. \( 5 \times 10^{-6} \, \Omega \)

Hint:

Remember: The resistance of a wire depends on its length, cross-sectional area, and the resistivity of the material.