[Numbers change] In the early 1900's Robert Millikan discovered the peculiar property that chargecame in little packets, no smaller than e = 1.602 x 10-19 C -- he had measured the charge of theelectron. Here's (roughly) how he did it. He removed an electron from an initially neutral droplet ofoil with diameter 0.8 um. In a vacuum, he positioned the droplet between two metallic platesseparated by 4 mm and fiddled with the potential (voltage) across the plates until the droplet wouldhover against the force of gravity. Droplets of this size with +e charge would hover, but only for aparticular voltage (otherwise they would sink or rise). Given the parameters stated here, and the factthat the density of the oil was 815 kg/m³, what was the voltage that made the droplets hover?(give your answer with 0.1 V precision)

The experiment that Robert Millikan performed for determining the elementary charge consisted of…

Answered: [Numbers change] In the early 1900's…

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In 1909, Robert Millikan and Harvey Fletcher designed an experiment to measure the electric charge of oil droplets by dropping them through an electric field, increasing the electric field strength until the droplets were suspended in the air. By repeating the experiment for many droplets, they confirmed that the charges were all small integer multiples of a certain base value, and thus they measured the charge of a single electron. In Millikan's experiment in the figure below, an oil droplet of mass 3.18 fg has an excess charge of five electrons. An electric field has been applied, and the droplet is levitating. What is the magnitude of the electric field? (Units: N/C) Note: 1??=10−15?=10−18??
ensitivity Editor Reuse 保存到 A Select v Files 百度网盘 Styles Editing Voice Sensitivity Editor Reuse Files 保存 12. How much work is required to assemble 4 identical charged particles, each of magnitude q=5 nC (red balls) at the corners of a cube of side a=10 cm ?(Fig 2) Fig.2 O cm and bh 1>
In the early 1900's Robert Millikan discovered the peculiar property that charge came in little packets, no smaller than e = 1.602 x 10-19 C -- he had measured the charge of the electron. Here's (roughly) how he did it. He removed an electron from an initially neutral droplet of oil with diameter 0.5 ??μm. In a vacuum, he positioned the droplet between two metallic plates separated by 6 mm and fiddled with the potential (voltage) across the plates until the droplet would hover against the force of gravity. Droplets of this size with +e charge would hover, but only for a particular voltage (otherwise they would sink or rise). Given the parameters stated here, and the fact that the density of the oil was 831 kg/m3, what was the voltage that made the droplets hover? (give your answer with 0.1 V precision)