Cable for Lenz and Oersted

To demonstrate the magnetic effect of electric current,
a current-carrying conductor causes a magnetic field in its surroundings (experiment according to Oersted, Lenz's rule);

Highly flexible stranded copper wire, ends stripped and tinned
Number of strands: 65
Diameter of the strands: 0.05 mm
Cross-section: 0.12 mm²
Cable length: approx. 25 cm