United Scientific Oersted’s Law Apparatus – Magnetic Needle Demo of Electric Current’s Magnetic Field (1.5 V–3 V DC)

Illuminate the connection between electricity and magnetism with the United Scientific Oersted’s Law Apparatus—an engaging, hands-on tool for physics education. Designed to vividly demonstrate how an electric current produces a magnetic field, this apparatus lets students observe real-time magnetic interactions.

Featuring a well-balanced magnetic needle mounted in the center of a rectangular metal frame, this device lets you direct current either across the bottom segment or around the entire frame via three binding posts. By reversing the current's direction, students can see the needle respond instantly—perfect for exploring electromagnetic principles. Compatible with low voltage sources (1.5 V to 3 V DC), it's ideal for safe classroom and lab settings.

Compact yet robust, the apparatus measures 3″ × 6″ × 7″, making it easy to integrate into both tabletop demonstrations and structured STEM activities.