Electromagnet Demonstrator with 4mm Terminals Science at Home and a dual-scale screen

and a dual-scale screen

and 4-pole armature configurations on the same motor frame by swapping interchangeable enameled-copper armatures past a permanent bar magnet on a disc commutator

spanning cell voltages up through high-tension supply outputs

and gauze-fronted object and receiving screens form this 1

and the conservation of angular momentum in rotational dynamics

Electromagnet Demonstrator with 4mm Terminals Science at Home and a dual-scale screenDemonstrates how current through a coil produces a controllable magnetic field, this electromagnet on a 4mm terminal base slots inline with other modules for circuit driven magnetism work.