A graph of R against L for a wire has gradient 20 Ω/m. The wire's area is 1.0 10^-7 m^2. Its resistivity is:

  1. 20 Ω m
  2. 2.0 10^8 Ω m
  3. 2.0 10^-6 Ω m
  4. 5.0 10^-9 Ω m
Answer

C) 2.0 10^-6 Ω m

rho = gradient A. SLO P-11-N-21 · Application

Physics MCQ · More Experimental Skills and Data Analysis MCQs · Practise