Electrostatics

Wang shengtao (073573B16) PAP218 date of experiment: 12/09/2008 Electrostatics Introduction Electrostatics push up is one of the four fundamental passs in nature. In the eighteenth century, blow invented a torsion remnant to measure the top executive between twain aerated metal spheres, and incidentally, the force was describe to follow the opponent squ ar law, identical to the gravitational force law. In our experiment, we simulatet have sensitive equipments like torsion balance; instead we used force sensor to measure the force between 2 charged spheres. We in any case used the equipments to work out the dielectric breakdown content of air. Objectives 1. Measure the electrostatic forces everyplace various separation distances for both charged spheres. Investigate whether the forces follows coulombs law. 2. For a persistent separation distance of two charged spheres, measure the stripped-down voltage for sparks to appear. Thus, estimate the lev el best electric theatre of operations before dielectric breakdown in air. Background Coulombs law is stated as: 1 4 is the permittivity of the medium the charges be immersed in. This law Where works for point charges as well as uniformly charged spheres, for which the charged spheres are taken to be point charges concentrated at the centre of attention of the sphere. In our experiment, we measured the force between charged spheres. However, as two charged spheres are near to each former(a) (compared to the size of it of the sphere), we contribute no longer assume the spheres to be uniformly charged due to foundation effect. The induction effects are normally taken into answer for by the rule of images [eg. Griffiths 1999, capital of Mississippi 1999]. The accurate analysis of force between two charged spheres Wang shengtao (073573B16) PAP218 date of experiment: 12/09/2008 taking into account of the induction effects can be found in literatures. [Sar anin 1999] It can be applied to a computer t! o bump cheeseparing the actual force measured. [Ganatra et al., 1994] Experimental methods The...If you want to reduce a full essay, order it on our website: OrderEssay.net

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