Charges & Coloumb's Law

Coloumb’s constant (K)

9×10⁹ (K)

Electric field formula

E=K(q₁q₂)/r²

Insulators

Material where electrons do not easily move from atom to atom. There are not free electrons to move about.

Conductors

Materials where electrons easily move from atom to atom. They are known as free electrons.

Electric field lines go towards what charge

negative

Electric field lines go away from what charge

positive

Electrostatic force

the force that exists between two point charges

Unit of electrostatic force

newton (N)

Unit of electric field

newtons per coloumb N/C

Elementary charge is the charge of…

one electron

Charge of one electron (C)

1.6×10^-19 C

electric dipole moment

measure of the separation of pos and neg charges

unit of electric charge

Coloumb (C)