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Define van de graff generator

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Define van de graff generator

    • Posted by Himanshi Monu 7 years, 2 months ago

    CBSE > Class 12 > Physics
    • 2 answers

    Yogita Ingle 7 years, 2 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.

    0Thank You

    G K 7 years, 2 months ago

    ?....... Its a device used to produces very high voltage direct current (DC) electricity at low current levels........?

    0Thank You

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