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What is van-di garph genrator

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What is van-di garph genrator
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Yogita Ingle 4 years, 7 months ago

Van de graaff generator is used to generate high voltages of the order of a few million volts. This results in generation of large electric fields for experimental purposes.

Principle

  • The inner sphere has a higher potential than outer if the charge q is positive.
  • If the two spheres are connected through a wire, the charge will flow from high to low potential.
  • Thus, providing smaller potentials at the inner sphere will keep building large amount of charge at the outer sphere, till the breakdown field of air (3 x 106 V/m) is reached.
  • This accumulates close to millions of volts.
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