C23 - Electric Fields

Coulomb’s Law

charging by induction

objects connected to ground and near a negatively charged object will eject electrons, creating a charge difference

Coulomb’s constant

k_e = 9 × 10⁹ (m² • N)/(C²) = 1/(4πε₀)

• ε₀ = 8.85 × 10^-12 (C²)/(m² • N)

charge of one electron

e = 1.6 × 10^-19 C

particle masses

m_electron = 9.1 × 10^-31

m_proton = m_neutron = 1.67 × 10^-27

Electric field

charge density

*dq = ρ dV = σ dA = λ dL

electric field lines

lines on which the electric field vector is tangent

acceleration in an electric field