Answer to Question #343178 in Physics for minseok

Question #343178

Find the charge of a point charge q if its electric field E has 12.1 N/C and a distance of 1.8m

Expert's answer

"E=k\\frac{q}{r^2}"

"q=Er^2\/k\\\\\n=12.1*1.8^2\/9*10^9=4.4*10^{-9}\\:\\rm C"

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