Physics, 18.07.2020 18:01, powpow71

We levitate a negatively charged oil droplet between two charged plates. If the weight of a charged sphere (e-) of mass 1.1 x 10-14 kg is balanced by an electric field of 1.68 x 105 N/C , how many excess electrons are on the sphere.

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We levitate a negatively charged oil droplet between two charged plates. If the weight of a charged...