A rod (length = 80 cm) with a rectangular cross section (1.5 mm × 2.0 mm) has a resistance of 0.20 Ω. What is the resistivity of the material used to make the rod? Group of answer choices 6.0 × 10−7 Ω ⋅ m 3.8 × 10−7 Ω ⋅ m 7.5 × 10−7 Ω ⋅ m 3.0 × 10−7 Ω ⋅ m 4.8 × 10−7 Ω ⋅ m
