The Relationship Between The Magnetic Strength Of The Electromagnet And The Magnitude Of The Current Product overview This Electromagnet Experimenter is designed for junior school group experiments to demonstrate how electromagnet strength depends on coil current. It provides a simple, repeatable setup for classroom labs and handson learning. Key benefits Visual, handson verification of the relationship between current and magnetic strength, using pins or other small ferrous objects as indicators. Adjustable current control via connection to a sliding rheostat and tapping points on the coils, allowing precise, stepwise observation. Flexible coil and core options let students compare configurations and better understand magnetic circuits. Lightweight and portable for classroom use, with durable plastic enclosure and metal components. Main features and specifications Coils: Two sets of coils, each with about 200 turns and a center tap. Each coil set has 3 binding posts for flexible connection. Core compatibility: Designed for use with both Ushaped cores and cylindrical cores to allow different experiment configurations. Materials: Plastic box housing with metal parts for electrical connections. Size: 2012036mm Net weight: about 190g Power options: Works with common student power supplies (example: 4.5V student supply) and can also be used with a single 1.5V cell in simplified setups. Typical experimental setup: Connect ammeter, sliding rheostat, electromagnet, and wiring in series to form a closed circuit. Start with rheostat at minimum resistance, apply supply voltage, observe pins attracted, then gradually increase resistance to reduce current and watch pins fall one by one, verifying the current versus magnetic strength relationship. Practical use scenarios Classroom lab: Demonstrate how changing current changes electromagnet strength while students record the number of pins attracted at different current levels. Smallgroup experiments: Allow groups to rewire coils using the center taps and compare results between Ushaped and cylindrical core setups. STEM demonstrations: Use the device for guided experiments on circuit behavior, coil turns, and magnetic field effects using standard classroom power supplies and meters. Notes Allow slight color variation due to different display or lighting conditions. Designed for educational use only; use with appropriate classroom instruments such as an ammeter and sliding rheostat.