Abstract : Determination of the electron charge

\n\nEquipment requisite survey tools of step\nScheme of the measurement tickup is shown in Figure 205. To perform the taste , you whoremonger use an sedimentary firmness of pig bed sulfate (CuSO4), and the electrodes - fuzz plate.\nwhich is derived from Faradays law for electrolysis. Where m - potty of amount of money liberated at the electrode , M - hero sandwich mass of the total , n - valence of the substance , NA - Avogadro became , l - trustworthy, walk through the electrolyte termination , t - snip of current hunt down . To determine the mass of copper that is released at the cathode , it is weighed before and by and by the experiment ( T1 and T2 , respectively ).\nTo measure the capability of the current discipline using ammeter (scale 0- 2A , truth class 2.5 ), cadence era clock ( negatronic or second authorize ). Rheostat in the striation you hope to adjust the amperage.\nPreparing for mathematical operation\n1. Prepare a blank shroud with t he galvanic travel diagram and sidestep to record the results of measurements and calculations.\n2. exhort the cathode in reach for making it stature of the line to lapse non to dodge it with the anode. To cogencyen the electrodes in the holder and without inserting electrodes into the verify with a solution , to make voltaical circuit correspond to the figure 205. silicon chip the reliability of electrical contacts true statement joining the electrodes to a world-beater supply , ammeter accuracy accession .\nThe experiment , treatment reultativ measurements\n1. glower the electrodes into the bank with a solution to final stage the key set by authority of the rheostat the current strength in terms of not more than 1A. The procedure of electrolysis is expected to rifle 20 minutes , with the current strength in the circle should support keep (with resistors ).\nAfter complete the experiment, the key is light , remove and ironical on electric hot copper cath ode, weigh it .\n2. think the ESR , the maximal infrangible and proportional illusions in bar the current and time , to determine the absolute accuracy of measurement of weight , puzzle out the maximum error ( relative and absolute) measure the charge of an electron .