Question

Find the electrostatic force between 2 electrons which are kept at distance 2 cm​

Answer 1

Answer:

Between 2 electrons 2 types of interaction takes place.

1.Gravitational interaction

This is very small or weak interaction as masses of electron is very small. So we need not to bother about it .Still it can be found as

F(gravitational)=Gmm/r^2

=(6.67×10^-11×(9.1×10^-31)^2)/(0.02)^2

=1.380×10^-67N

Which is very small and it is an attractive force.

2.Electrostatic force

This interaction is due to the intrinsic property of electron. As they are charge particles so they exert electrostatic force on each other.

F(electrostatic)=1/4*pi*€(e^2/r^2)

=(9×10^9×(1.6×10^-19)^2)/(0.02)^2

=5.76×10^-25N

As 2 electrons are of similar charge they exert repulsive force on each other.