Air Core Solenoid, 1 Each

The Air Core Solenoid by United Scientific is a 500-turn coil on a clear acrylic former with a 90 mm diameter, built for studying the magnetic field of a coil and for the current balance experiment. Five red binding posts tap 100 to 500 turns, total resistance is 20 Ω, and one segment carries up to 1.5 A from a 6 VDC source. Physics teachers use it for electromagnetism labs and demonstrations.