1. Initially, both leaves of the electroscope are neutral and hang vertically.
2. As the positively charged body is brought near the top of the electroscope, the leaves begin to separate. This is because the positive charges on the body induce negative charges on the top of the electroscope and positive charges on the bottom.
3. The leaves continue to separate as the positively charged body is brought closer, indicating that the electrostatic force between the body and the electroscope is increasing.
4. If the positively charged body is touched to the top of the electroscope, the leaves will spread even further apart. This is because the electroscope becomes positively charged through direct contact with the charged body.
5. If the positively charged body is removed, the leaves of the electroscope will gradually collapse as the induced charges on the electroscope dissipate.
6. If the positively charged body is replaced with a negatively charged body, the leaves of the electroscope will initially attract each other and then separate with the opposite polarity.
The gold leaf electroscope, therefore, provides a visual indication of the presence of electric charge and its polarity, allowing for basic experiments and demonstrations in electrostatics.
