The correct option is option (1)
The magnitude of the electrostatic force is 2.56 × 10⁻²² N
The electrostatic force on two identical charges q separated by a distance r is given by:
[tex]F = \frac{kq^2}{r^2}[/tex]
where k is Coulomb's constant
q is the charge, and
r is the separation between the charges.
For an electron:
q = 1.6 × 10⁻¹⁹ C
and it is given that the two electrons are separated by a distance:
r = 1 × 10⁻⁸ m
So the electrostatic force between them will be:
[tex]F=\frac{kq^2}{r^2}=\frac{9\times10^9\times(1.6\times10^{-19})^2}{(1\times10^{-8})^2}\\\\F=2.56\times10^{-22}\;N[/tex]
Learn more about electrostatic force:
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