The resistance of the nickel conductor is 12 ohms, its cross-section is 0.6 mm². Determine the length of the conductor.

To determine the required length of the nickelin conductor, we use the formula: R = ρ * l / S, whence we express: l = R * S / ρ.

Variables and constants: R – resistance of the nickelin conductor taken (R = 12 Ohm); S – cross-sectional area (S = 0.6 mm2); ρ is the specific electrical resistance of nickelin (at a temperature of 20 ºС ρ = 0.4 Ohm * mm2 / m).

Calculation: l = R * S / ρ = 12 * 0.6 / 0.4 = 18 m.

Answer: The length of the nickel conductor is calculated to be 18 meters.