

InterviewSolution
Saved Bookmarks
1. |
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` |
|