Physics

Students kit Electrical energy sources

Generate and measure electrical energy and understand the relationships

Grade level: Grades 5–10
Use: Student experiments on solar cells, galvanic cells, generators, electric voltage and different forms of energy conversion

With the Students kit Electrical energy sources, students investigate through hands-on experiments how electrical energy can be provided in different ways. Designed for use in Grades 5 to 10, the set allows students to compare different energy sources experimentally.

Students work with a solar cell, a galvanic cell and a generator, gaining an understanding of different principles of energy conversion. The experiment with the solar cell demonstrates that it converts energy but does not store it. With the galvanic cell, the focus is on chemical processes as the basis for providing electrical energy, while the generator illustrates energy conversion through electromagnetic induction.

A sensitive voltage indicator is used to detect the generated electrical voltage. This allows students to observe electrical processes directly and compare the different energy sources through practical experiments.

The picture shows a red box equipped with materials for experiments. The items included include a flashlight, batteries, copper wires and various connectors that can be used for school experiments.
The picture shows a red box equipped with materials for experiments. The items included include a flashlight, batteries, copper wires and various connectors that can be used for school experiments.
The picture shows a red suitcase filled with experimental materials on the topic of electrical energy sources. It contains batteries, a solar cell, cables, a measuring device and instructions describing how to use the materials.
The picture shows instructions for an experiment set on the topic of "Electrical energy sources". It contains information on handling and didactic use of the device, which is shown with connecting wires and a small bowl.
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The picture shows an experiment kit with various components, including a transparent tube and copper wire, in a padded compartment. Above it is a document with the Cornelsen logo, which indicates the supplier of the material.
The picture shows an experimental setup with two red cables connected to a power source with a measuring device. In a person's hand is a transparent tube with a copper wire winding, which is part of the experiment.
The image shows an experimental setup where a blue flashlight is pointed at a solar panel connected to red cables. In the middle is a meter for displaying electrical values, visualizing the connection and the functioning of the system.
The picture shows an experiment set with two red cables, a multimeter for measuring voltage and a small plastic bowl equipped with a copper and a metal plate. Next to the set is a small glass of citric acid that can be used for chemical experiments.

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The students observe the relationship between energy supply and current. The experiment makes it clear that the solar cell only converts energy, but does not store it.


The students can be informed that all batteries and accumulators employ similar chemical processes to generate electrical energy for circuits. A battery is said to be “dead” when the chemical reactions in it have ceased, e.g. because the substances arising from these reactions have fully sealed the plate surfaces.


Students should recognize that the nature of this energy conversion is different in principle from the other two types of conversion.


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  • 1 × Zinc electrode, angled
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  • 2 ×
  • 1 × Copper electrode, angled
  • 1 × Solar cell
  • 1 × Copper wire, varnished, 0,25 mm Ø
  • 2 × Plug lead 25 cm, red
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  • 1 × Magnet rod ALCOMAX
  • 1 × Plastic tube with 2 rings
  • 1 × °Glass with citric acid
  • 1 × Lidfoam R3, grey 260x200x10 mm
  • 1 × Felt board strips, 10 pcs
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