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Write the principle of van de …

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Write the principle of van de graff generator

Posted by Mahima P Naik 4 years, 11 months ago

CBSE > Class 12 > Physics

3 answers

Drishty Kamboj 4 years, 11 months ago

Out of syllabus

Sanjeev Yadav 4 years, 11 months ago

But it is out of syllabis

Yogita Ingle 4 years, 11 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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