What does charge means? what does charge of electron = -1.6 x 10 -19 mean? is it the force of attractive or repulsion of electron then why the unit of charge is Coulomb not Newton?? is it the size of electron??(and that's mean that Coulomb is much smaller than micro meter?) i mean what does charge refer to? another question: why when we want to measure the force between two charges we use this rule: F = K (Q₁*Q₂)/r² not the gravitational force between two bodies F = G (m₁*m₂)/r²? Please help I'm very confused and i have a quiz tomorrow!

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by Haytham002 at October 21, 2011