ne a closed surface described within the body of theconductor and surrounding the cavity. There is no inten-sity at this surface (§ 16), hence N = 0 and f/Nds =0 = 4:nQ, hence Q = 0. That is, the algebraic sum of the 38 STATIC ELECTRICITY, charges within the surface is 0. Therefore, the… … Fig. 19. in performing it. Let the outside of a metal pail or cyl-inder, standing on an insulating block, be connected by awire to an electroscope (Fig. 19). No divergence is ob-served. Lower a charged ball into the pail by means of asilk thread. The leaves will gradually diverge until theball is…
Electronics · Electricity
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