• This apparatus helps to demonstrate Ampere's Rule
• Consists of a brass wire that passes through a plastic circlular table that can hold up to 6 small compasses (included) on top of it
• The brass wire also travels across the base of the apparatus over a larger compass (included) and excess at the end is provided to connect to a power supply (not included)

Use this apparatus to explain Ampere's rule. This demonstration consists of a heavy brass wire attached to a transparent plastic base. It comes with six small compasses and one larger compass. To demonstrate Ampere's rule using this apparatus, arrange the compasses around the wire, attach the wire to a power supply (not included), and turn it on. This will cause the compass needles to change directions.