64 smaller water droplets each of radius 4mm are collapsed to formed a bigger water droplet. Calculate the ratio of their (small/big) surface charge densities?
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Explanation:
By Volume Conservation we can find radius of bigger sphere
we get. r = 16 mm
let there will be a total charge q on all the 64 smaller water droplets. So there will be a total charge on bigger sphere will also be q by charge conservation.
From calculating it we get... 1: 4 Answer
( Sigma = Q ÷ Area )
Thank you
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