Lenz’s Law Apparatus

Demonstrate the principles of magnetic induction and electromagnetic interaction with the Lenz’s Law Apparatus. This hands-on device features a balanced aluminum arm with two loops—one solid and one slotted—to show how induced currents oppose magnetic motion. Includes a detailed activity guide aligned with NGSS standards.

Specifications

• Part Number: LENZLAW
• Dimensions: 3″ × 8″ × 6″ (7.6 cm × 20 cm × 15.2 cm)
• Material: Aluminum arm and loops; solid metal base
• Included Components:
  • Solid loop
  • Loop with slit
  • Pointed balance support
  • Metal base
• Magnet Required: Not included (neodymium recommended)
• Activity Guide: Included

Features

• Demonstrates magnetic induction and Lenz’s Law
• Contrasts behavior of complete vs. incomplete loops
• Balanced arm responds visibly to magnetic fields
• Works with a variety of magnets
• Durable aluminum construction

Educational Standards

• Middle School: MS-PS2-3 – Electric and magnetic force interactions
• High School:
  • HS-PS2-5 – Magnetic fields from electric currents
  • HS-PS3-5 – Energy changes due to electromagnetic interactions

Applications

• Classroom demonstrations of electromagnetic induction
• STEM education and NGSS-aligned investigations
• Visualizing opposing magnetic fields and induced currents

Maintenance

• No special maintenance required
• Store in a cool, dry place away from sunlight
• Clean with a soft, damp cloth
• Handle pointed support with care