Electromagnet Bell Demonstration, 3-6V AC Included_Rod & Base & Clamps providing the more readily oxidized

providing the more readily oxidized electrode that drives current in classic galvanic-cell demonstrations

Air-cooled rheostat at 36 ohms and 3A with constantan winding on a 300x44mm vitreous-enameled tube

Bare 20 SWG copper wire on a 250g reel approximating 140 feet

sized for side-by-side strength comparison against the chrome-steel cylindrical series of similar dimensions

letting students read both small-cell and battery-stack voltages on a single instrument

Electromagnet Bell Demonstration, 3-6V AC Included_Rod & Base & Clamps providing the more readily oxidizedOpen mount electromagnet bell on an 8x4 inch wooden base with a push button and 4mm banana sockets, exposing every wire and hammer so students trace the bell's electromagnetic action.