Discuss the operation of and resulting electric fields from the Van der Graaff generator. Include in...

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Physics

Discuss the operation of and resulting electric fields from theVan der Graaff generator. Include in your answer an explanation ofwhere the excess charge originates and how it is gathered to form acharge at the output. You should use diagrams to explain youranswer and of the resulting electric field around the generatorâ€™ssphere.

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A simple Van de Graaff generator consists of a belt of rubberor a similar flexible dielectric material moving over two rollersof differing material one of which is surrounded by a hollow metalsphere Two electrodes 2 and 7 in the form of combshapedrows of sharp metal points are positioned near the bottom of thelower roller and inside the sphere over the upper roller Comb 2is connected to the sphere and comb 7 to ground The method ofcharging is based on the triboelectric effect such that simplecontact of dissimilar materials causes the transfer of someelectrons from one material to the other For example see thediagram the rubber of the belt will become negatively chargedwhile the acrylic glass of the upper roller will become positivelycharged The belt carries away negative charge on its inner surfacewhile the upper roller See Answer

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