Answer to Question #349620 in Field Theory for javan

Question #349620

if two equal charges , each of 1c,were separated in air by a distance of 1km,what would be the force between them?

Expert's answer

"F=k\\frac{q_1q_2}{r^2}"

"F=9*10^9\\frac{\\rm N\\cdot m^2}{\\rm C^2}*\\frac{1\\: \\rm C*1\\: C}{(10^3\\:\\rm m)^2}=9000\\:\\rm N"

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