Electric Field: Observational Experiment
Aim
To explain the mechanism of electrostatic interactions.
Prior Knowledge
- Electric charge and electric force
- Conductors and dielectrics.
- Electroscopes
Description of the Experiment
The experiment consists of three parts. Watch the first part and explain what you observed. Modify your explanation after watching the second and the third parts of the experiment.
Addtional Information
The rod never touches the electroscope.
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Questions
- Why did the electroscope deflect even though the charged rod did not touch it?
- Why do you think the electroscope did not deflect when its top was covered with a metal cage?
- Why do you think that the electroscope did deflect when the top was covered with a plastic bottle?
