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Draw a labelled diagram to show how an electric field pattern can be demonstrated in the laboratory. - Leaving Cert Physics - Question (g) - 2020
Question (g)
Draw a labelled diagram to show how an electric field pattern can be demonstrated in the laboratory.
Worked Solution & Example Answer:Draw a labelled diagram to show how an electric field pattern can be demonstrated in the laboratory. - Leaving Cert Physics - Question (g) - 2020
Step 1
Source of high voltage
Answer
In the laboratory, an electric field pattern can be demonstrated using a source of high voltage, which typically involves a Van de Graaff generator or a high-voltage power supply. This device is responsible for providing the necessary voltage to create a significant electric field. It is essential to clearly label this part of the diagram.
Step 2
Connected across plates, with oil, semolina
Answer
The setup includes two conductive plates that are connected to the high-voltage source. These plates are typically arranged parallel to each other. To visualize the electric field pattern, an insulating medium such as oil can be used alongside a powder like semolina or similar materials. When the high voltage is applied, the semolina will align along the electric field lines, demonstrating the shape and direction of the electric field between the plates. Make sure to label these components clearly in your diagram.