Two electrons are separated by a distance of 1 angstrom what is the coulomb force between them

Text Solution

`2.3xx10^(-8)N``4.6xx10^(-8)N``1.5xx10^(-8)N`None of these

Answer : A

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

Two electrons are separated by a distance of 1 A ∘. What is the coulomb force between themA. 2.3 × 10 8 NB. 4.6 × 10 8 NC. 1.5 × 10 8 ND. None of these

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