Designed for laboratory research on Lenz’s law and the relationship between magnetic fields and electrical currents, this set includes both primary and secondary coils. The primary coil consists of 400 turns of φ0.59 wire, with an inner diameter of φ13 ± 0.5 mm and an outer diameter of φ22 ± 1 mm. The secondary coil features 1150 turns of φ0.27 wire, with an inner diameter of φ35 ± 1 mm and an outer diameter of φ49 ± 1 mm.
