Question

Which equation correctly states Coulomb's law?
I tried researching but the answers on my quiz don't match the equations I've searched.

Answer 1

Fe=kq1q2/R^2 ?

Answer 2

What answers are on your quiz? Columbs law states that \[|F|=k\frac{|Q_1Q_2|}{r^2}\]where: \[k=\frac{1}{4pi \epsilon_0}\]

Answer 3

misha got it. thanks to both of you tho. :)

Answer 4

@stormfire 1 is correct but the formula holds only for vacuum. In media , epsilon zero is replaced by epsilon which can be written as epsilon= epsilon zero*relative permittivity epsilon

Answer 5

Good clarification! I should have mentioned that.