A wire has resistivity 4.9 10^-7 Ω m, length 2 m and cross-section 5 10^-7 m^2. Its resistance is:

  1. 3.92 Ω
  2. 19.6 Ω
  3. 1.96 Ω
  4. 0.196 Ω
Answer

C) 1.96 Ω

R = rho LA = 1.96 Ω. SLO P-09-E-13 · Application

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