> #instruments , #charge-detection , #physics > Describe with the help of a diagram and instrument which can be used to detect a charge body?
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Lakshay Ranga
Jan 17

Describe with the help of a diagram and instrument which can be used to detect a charge body?

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Jan 17
One instrument that can be used to detect a charged body is an electroscope. An electroscope is a simple device that can indicate the presence and type of charge on an object.

Here is a description of an electroscope along with a diagram:

1. The electroscope consists of a metal rod (usually brass or aluminum) with a metal disc or sphere at the top. This metal disc is called the terminal.

2. The metal rod is attached to a metal plate called the base, which is usually made of a non-conductive material like plastic or glass.

3. Inside the base, there is a thin metal strip or leaf, usually made of aluminum or gold foil, which is connected to the metal rod.

4. The metal strip or leaf is initially neutral, meaning it has an equal number of positive and negative charges.

5. When a charged object is brought close to the terminal of the electroscope, the charges on the object induce a separation of charges in the metal strip or leaf.

6. If the charged object is positively charged, it repels the positive charges in the metal strip or leaf, causing them to move away from the terminal. This results in the metal strip or leaf bending away from the terminal.

7. If the charged object is negatively charged, it repels the negative charges in the metal strip or leaf, causing them to move away from the terminal. This also results in the metal strip or leaf bending away from the terminal.

8. The bending of the metal strip or leaf indicates the presence of a charged object and the type of charge it carries.

9. To discharge the electroscope, a grounded object (such as a finger) can be touched to the metal rod. This allows the charges to flow to or from the ground, neutralizing the electroscope.

The diagram below illustrates the structure of an electroscope:

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