What is electroscope ? Draw a labled diagram of the electroscope and explain its working
Answers
It is an instrument used to detect the presence and magnitude of the electric charge.
When the top of the instrument is brought near the charged body the leaf inside the electroscope repel
or attract depending on the charge of the body which is brought near it.
If the body is negatively charged then the electrons from the top of electroscope are pushed downward and the two leaf repel away from each other.
If the body is positively charged then the electrons from the top of electroscope are pushed upward and the two leaf attract each other.
ELECTROSCOPE :
Electroscope is used to detect and measure electric charges.
WORKING OF AN ELECTROSCOPE :
•In an uncharged electroscope, the leaves hang straight down.
•When a charged object touches the metal knob, electric charges travel down the rod and into the leaves.
•The leaves spread apart, indicating the presence of an electric charge.
•Since the charge on both leaves is the same the leaves repel each other and spread out.
CONSTRUCTION OF AN ELECTROSCOPE :
An electroscope consists of a metal rod with a knob at the top and a pair of thin metal leaves at the bottom. The rod is inserted in a one hole rubber stopper which fits into a flask. The flask contains the lower part of the rod and the metal leaves.
