Nichrome wire 4.8 m long has a resistance of 24 ohms. What is the cross sectional area of the wire
| November 29, 2020 | education
1) Determine the cross-sectional area of the nichrome wire: R = ρ * l / S and S = ρ * l / R = 1.1 * 4.8 / 24 = 0.22 mm2.
2) Calculate the diameter of the nichrome wire: S = Π * D2 / 4 and D = √ (4S / Π) = √ (4 * 0.22 / 3.14) = 0.529 mm.
Answer: The diameter of the nichrome wire is 0.529 mm.
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