Question

working and construction of an electroscope

Answer 1

A simple electroscope consists of a glass jar resting on a wooden base. It is closed with an ebonite stopper having a hole. A brass rod passes through this hole. Two gold leaves are attached to the lower end of  the rod. A brass knob or disc is attached to the upper end of the rod. The glass vessels protects the gold leaves from air currents. Two strips of tin foils are fixed inside the bell jar facing the gold leaves. When the electroscope is in use, the metal foil is connected to the earth.


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Answer 2

this is your answer