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Principle
Solar cells play an important role in the use of alternative energy sources, since they convert the sun's solar radiation directly into electrical energy. The electrical energy generated is demonstrated very clearly in this experiment by the use of a ...
The filament lamps used in this experiment have very different power levels. It should be made clear to the pupils that pulling more strongly on the fishing line transmits more mechanical energy.
Once the physical relations ...
This experiment shows that a thermogenerator can produce electric energy from thermal energy. The thermal tension of a thermogenerator depends on the temperature difference across the element.
Task
Is ...
This experiment shows that a thermo generator can produce mechanical energy with the help of coldness and heat. The thermal tension of a thermo generator depends on the temperature difference across the element.
The solar cell plays an important role in the development of alternative, non fossil fuels energy sources. It converts light energy directly into electric energy. The pupils examine whether the distance of the light source affects the generated ...
In the experiment the surface of the solar cell is covered with black cardboard. The current intensity and the voltage of the solar cell are measured.
How does the solar cell behave when its surface is reduced? ...
The pupils should examine a connection in series of two solar cells by measuring the open circuit voltage, Uges, and the short-circuit current, Iges.
Greater voltages can be reached by connecting solar cells in se ...
The pupils should examine a parallel connection of solar cells by measuring the open circuit voltage, Uges, and the short-circuit current, Iges.
Using a connection in parallel, greater currents can be reached.
A red light-emitting diode requires approximately 2 V supply voltage, that means it cannot be operated with a single solar cell. The Pupil kit contains a solar battery which supplies the required voltage. The experiement should make clear how single s ...
The pupils should become familiar with the behavior of a solar cell which is not being illuminated. In doing this, a DC voltage is applied to the the cell and it is ascertained whether a current is flowing, with the aid of a light bulb. Then the polar ...
Solar cells play an important role in the development of alternative, non-fossil energy sources. They convert light energy directly into electric energy. This experiment examines the influence of the intensity of illumination an the open circui ...
Batteries can have different charging states. Before beginning the experiment check whether the Ni-Cd accu is already discharged, so that the glow lamp does not light at the beginning of the experiment. If it glows, the Ni-Cd accu can be discha ...
The current dependence on voltage of a darkened solar cell is to be measured.
How does a solar cell behave when it is dark?
The maximum utilisable power of a solar cell is dependent on the intensity of the incident light. Characteristic current-voltage curves are prepared under various illuminations.
How does a load change the ...
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