Question

2.Найти сопротивление медного проводника длиной 50 см и сечением 2 мм2 (удельное электрическое сопротивление меди равно 0,017 Ом∙мм2/м).

Answer 1

R = p*L/S = 0,0017*0,2/0,000002 = 170 Ом

Answer 2

Calculating the Resistance of the Copper Conductor

To find the resistance (R) of the copper conductor, we can use the formula: R = ρ * (l / A), where ρ is the resistivity of the material, l is the length of the conductor, and A is the cross-sectional area of the conductor.

Given: - Length of the copper conductor (l) = 50 cm = 0.5 m - Cross-sectional area of the conductor (A) = 2 mm^2 - Specific electrical resistivity of copper (ρ) = 0.017 Ω∙mm^2/m

Using the formula, we can calculate the resistance (R): R = ρ * (l / A)

Substitute the given values: R = 0.017 * (0.5 / 2)

Calculate the resistance: R = 0.017 * (0.25) R = 0.00425 Ω

So, the resistance of the copper conductor with a length of 50 cm and a cross-sectional area of 2 mm^2 is 0.00425 Ω.

[[SOURCE #1]]