Enhance your physics experiments and classroom demonstrations with this high-quality Primary and Secondary Coil Set, designed specifically for electromagnetic induction studies and verifying Lenz's law. Crafted from selected durable metal materials, this coil set offers stable performance and long-lasting durability, making it an essential teaching instrument for middle school physics. Key Features: · Complete Electromagnetic Induction Kit: Includes primary coil, secondary coil, and soft iron core to facilitate comprehensive experiments on electromagnetic induction principles. · Precise Coil Specifications: The primary coil features 200 turns with an inner diameter of approximately 11mm (0.43in) and outer diameter of about 15mm (0.59in). The secondary coil contains 370 turns, with an inner diameter of approximately 24mm (0.94in) and outer diameter of 30mm (1.18in), ensuring sensitive and accurate electromagnetic induction demonstration. · Educationally Essential: Perfect for middle school physics labs, this coil set helps clearly demonstrate electromagnetic induction effects and verify Lenz's law, making complex concepts easier to understand. · Durable Metal Construction: Made from selected metal materials, the coil set is designed to be sturdy, wear-resistant, and reliable for repeated use in teaching environments. · Easy to Use & Stable Performance: The coil kit is designed for straightforward setup and stable operation, providing consistent results for effective physics experiments. Specifications: · Material: Metal · Model: 24010 · Primary Coil: 200 Turns · Primary Coil Inner Diameter: Approx. 11mm / 0.43in · Primary Coil Outer Diameter: Approx. 15mm / 0.59in · Secondary Coil: 370 Turns · Secondary Coil Inner Diameter: Approx. 24mm / 0.94in · Secondary Coil Outer Diameter: Approx. 30mm / 1.18in Package Includes: · 1 x Primary and Secondary Coil Set This electromagnetic induction coil set is an indispensable tool for educators and students to explore and verify fundamental physics laws with ease and precision. Its robust metal construction and sensitive coil design make it ideal for effective and reliable physics instruction.