Determine the current flowing through a 140 cm long steel conductor with a cross-sectional

Determine the current flowing through a 140 cm long steel conductor with a cross-sectional area of 0.3 mm2. The voltage at the ends of the conductor is 0.26 V

To find out the current in the specified steel conductor, consider the equality: ρst * l / S = R (resistance of the steel conductor) = U / I, whence we express: I = S * U / (ρst * l).

Const: ρst – beats. electrical resistance (ρst = 0.103 … 0.137 Ohm * mm2 / m; we take ρst = 0.12 Ohm * mm2 / m).

Data: S – cross-sectional area (S = 0.3 mm2); U – voltage (U = 0.26 V); l – conductor length (l = 140 cm = 1.4 m).

Let’s perform the calculation: I = S * U / (ρst * l) = 0.3 * 0.26 / (0.12 * 1.4) ≈ 0.464 A.

Answer: The current in the specified steel conductor must be 0.464 A.