- #1
ishterz
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Homework Statement
An negatively charged sphere of mass 3.3x10^-15 kg is held at rest b/w two parallel plates separated by 5.0mm when the potential difference between them is 170V. How many excess electrons are on the sphere?
B) The charged sphere suddenly loses one of its excess electrons. The p.d b/w the plates remains the same. Describe the initial motion of the sphere
Homework Equations
qv/d=mg
The Attempt at a Solution
I got part (a) as 6 excess electrons. I equated the electric field to the weight found the charge and divided it by 1.6X10^-19.
However, I am having trouble with part (b) ; the answer given also gives the value initial acceleration. I tried finding the accerlation by F=ma but didn't get the answer.
Please help
Thanks :)