C-11-Q076mediumsingle_mcqL=2L = 2L=2 m, A=1A = 1A=1 m2^22, ρ=1.7×10−8 Ωm\rho = 1.7 \times 10^{-8}\,\Omega mρ=1.7×10−8Ωm হলে RRR —a3.4×10−8 Ω3.4 \times 10^{-8}\,\Omega3.4×10−8Ωb1.7×10−8 Ω1.7 \times 10^{-8}\,\Omega1.7×10−8Ωc0.85×10−8 Ω0.85 \times 10^{-8}\,\Omega0.85×10−8Ωd3.4×108 Ω3.4 \times 10^{8}\,\Omega3.4×108Ω