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The experimental box can carry out a variety of physical and electrical experiments, effectively stimulating the interest of learning and exploration Product name: physical and electrical test box Product function: physical electromagnetic experiment Product weight: 2.5kg Product list: Ammeter*1 Voltmeter*1 Magnet Bell*1 Motor*1 Battery box*1 SPDT*1 SPST*1 Lamp holder*1 Fixed value resistor *1 Sliding rheostat*1 Multifunctional base*1 Diode*1 The law of resistance*1 Multifunctional experiment board*1 Salt battery Box*1 Screwdriver*1 Maglev Balance Bar*1 Iron Powder Box*1 Metal Electric Plate*6 Other Accessories*1 Small Magnetic needle*1 Lead wire*1 Small light bulb*4 Storage box*1 Rubber stick*1 Hand crank generator*1 Battery *1 Solar Motor*1 Multifunctional Base*1 Solar Panel*1 Joule's Law*1 Fuse*1 Foil Electroscope* 1 Upgrade Buzzer*1 Sensitive Ammeter*1 Note: If you have any questions about this product, please write to us , we will solve your problem as soon as possible! It is easy for junior high school students and children to explore in advance and get interested in physical science Help children learn to observe experimental phenomena, learn to explore experimental processes, and summarize experimental conclusions If you have any questions about this product, please write to us and we will reply to your questions as soon as possible It can carry out more than 50 kinds of experiments such as simple circuit experiment of small light bulb, series circuit experiment, parallel circuit experiment, ammeter measuring current experiment and voltmeter measuring voltage experiment. A good helper to help children develop thinking and practical ability Brand Name EHVYBDX Unit Count 1.0 Count Manufacturer EHVYBDX Manufacturer Part Number SY1015082