High-Inductance Coil Lab Supplies_Scoops & Spatulas and three low-friction nylon wheels

and three low-friction nylon wheels for straight-line momentum experiments

heavy duty

Sliding-top wooden box 5 x 2 x 1 inches with a recess sized for a pair of 100mm (4-inch) bar magnets plus their keeper

and field magnet for direct observation as students trace how current produces rotation in a closed magnetic circuit

with DC output to 25V and AC to 24V at up to 6A for classroom electronics

High-Inductance Coil Lab Supplies_Scoops & Spatulas and three low-friction nylon wheels1100 turn copper coil on a bobbin sized for a double C core, providing roughly 15 henries of inductance for AC experiments on phase, impedance, and stored magnetic energy.