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Two electrons are separated by a distance of `1Å`. What is the Coulomb force between them?A. `2.3xx10^(-8)N`B. `4.6xx10^(-8)N`C. `1.5xx10^(-8)N`D. None of these

Answer» Correct Answer - A
Change on electron `16xx10^(-19)C`
Using the relation, `F=(1)/(4pi epsilon_(0)).(q_(1)q_(2))/(r^(2))`
`"Here, "q_(1)=q_(2)=1.6xx10^(-19)C`
`r=1Å=10^(-10)m`
So, Force between the electrons
`F=(9xx10^(9)xx(1.6xx10^(-19))^(2))/((10^(-10))^(2))=2.3xx10^(-8)N`


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