Question

What is coulomb's law.

Answer 1

The force of attraction or repulsion acting along a straight line between two electric charges is directly proportional to the product of the charges and inversely to the square of the distance between them.

Answer 2

$\textbf{Hey there}$!


Answer:


It states that force between two point charges is directly proportional to the product of the charges and inversely proportional to the square of distance between them.


Acc. to Law ,we get:


F $\displaystyle \propto$ $q_{1}$.$q_{2}$.........( 1 )


F $\displaystyle \propto$ $\frac{1}{r^{2}}$.........( 2 )


Combining ( 1 ) and ( 2 ) equations.

We get:


F $\displaystyle \propto$ $\frac{q_{1} q_{2}}{r^{2}}$


F = k $\frac{q_{1}q_{2}}{r^{2}}$


Where k is constant and the value of this constant is given by:


k = $\frac{1}{4e_{0}\pi}$


Where $E_{0}$ is the permittivity of free space . But the value of permittivity change with the mediums.


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