Electric Charge and Electric Field (Coulomb's Law)
F = k|q1q2| / r2
E = FE/q1
F = electrostatic force
q1 = magnitudes of charges1
q2 = magnitudes of charges2
r = distance between two charged objects
E = electric field
FE = electric field force
Note: k refers to Coulomb's constant which is approx. 9 x 109 N·m2/C2.
Magnetism
F = qvB sinθ
F = ILB sinθ
τ = NIAB sinθ
F = magnetic force
q = charge
v = velocity
B = magnetic field
θ = angle between v and B