Oersted circuit, electromagnetism, for 0 to 30 V source.
Oersted battery-operated set
Equipotential surface assembly for multimeter and 0-30 VDC variable power supply.
Solar panel with Newton's disk, electric car, accumulator, rheostat and consumer unit
Robotics kit for elementary school I
Electrostatic generator, 400 kV, Van de Graaff
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