ITEM NAME:Demonstration Primary and Secondary Coil H4B8 ☆★ Product Details ★☆ Demonstration Primary and Secondary Coil H4B8 Transformer Theory Use with a Galvanometer Quality Construction with Enameled Copper This primary and secondary coil set is commonly used to study transformer theory and electromagnetic induction. Used with a galvanometer, the coil can demonstrate induced current. Comes with Primary coil, Secondary coil adn soft iron core. Weight: 6.5 oz. Overall Measurements: 2.5 x 3.5 inch H colour:Copper + black Material:Plastic + copper Package Contents: 1 * set Demonstration Primary and Secondary Coil