What is the current in a nickel-plated conductor with a length of 12 m and a cross-section of 4 mm2, to which a voltage

What is the current in a nickel-plated conductor with a length of 12 m and a cross-section of 4 mm2, to which a voltage of 36 mV is applied? (nickelin resistivity 0.4 Ohm mm2 / m)

Let’s find the resistance R of the nickelin conductor if its length is l = 12 m, the cross-section is S = 4 mm², and the specific resistance of nickel is p = 0.4 Ohm mm² / m:
R = p * l / S = 0.4 * 12/4 = 0.4 * 3 = 1.2 Ohm.
Let us find the current in a nickel conductor if a voltage of 3.6 mV is applied to it:
I = U / R = 3.6 / 1.2 = 3 mA.
The answer is the current in the nickeline conductor is 3 mA.