Van-de-Graff || Generator || Class 12 || Physics || Tamil

[@saretharanisha2939]

PRINCIPLE: 1. electrostatic induction, 2. action of points
DIAGRAM :
CONSTRUCTION: 1. Let A be a metallic sphere, mounted on coil 1. B and C are two smooth pulleys moved over a silk belt.
2. Comb D and E are comb shaped conductors placed near the pulley.
3. Comb D is connected to a battery of 10^4 volt.
4. The pulleys are continuously driven by an electric motor.
WORKING:
1. Due to high electric field near the comb D, air gets ionized.
2. The positive charges will get repelled and stick onto the belt.
3. They slowly reach near the comb E.
4. Due to induction, needle acquire negative and the sphere will acquire positive charge.
5. This process will continue until there's a limiting value of charge acquired on the sphere.
6. The leakage of charges from the sphere can be reduced by enclosing it in a gas filled steel chamber at very high pressure.
USES: nuclear disintegration

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[@HACK-be1nk]

Van De Graaff Generator
PRINCIPLE:
1. electrostatic induction
2. action of points
DIAGRAM :
CONSTRUCTION:
1. Let A be a metallic sphere, mounted on an insulating stand
2. B and C are two smooth pulleys moved over a silk belt.
3. D and E are comb-shaped conductors placed near the pulley.
4. The pulleys are continuously driven by an electric motor.
5. Comb D is connected to a battery of 10^4 volts.
WORKING:
1. Due to the high electric field near the comb D, the air gets ionized
2. The positive charge will get repelled and stick to the belt
3. They slowly reach near the comb E.
4. Due to induction, the comb E acquires a negative charge and the sphere will acquire a positive charge.
5. This process will continue until there's a limiting value of charge acquired on the sphere.
LIMITATIONS:
1. The leakage of charges from the sphere can be reduced by enclosing it in a gas-filled steel chamber at a very high pressure.
USES:
1. nuclear disintegration.

[@mr.frugal347]

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sir my physics put only 2 marks for this diagram 2only giving they says
principli
working
uses
limitation
diagram

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Comb D 'la which one be going because of battery..... positive or negative charge?

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Positive charge

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Comb D la 10 power 4 nu kedaikithu apo mela pogumbothu epadi 10 power 7 ah change aaguthu sir

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10 power 4 is given and we generate 10 power of 7 by means of the charge accumulated on the sphere

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5

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