Key Formulas in Electrodynamics – Study Guide and Reference for Physics and Engineering Page 1 Key Formulas in Electrodynamics – Study Guide and Reference for Physics and Engineering.pdf
Key Formulas in
Electrodynamics – Study
Guide and Reference for
Physics and Engineering
Page 1 of 6Guidehttps://www.stuvia.com/dashboard!@_)#*)(@$)($@*($@)($@*_1 of 6 2026-03-17
, Key Formulas in Electrodynamics Page 2 Key Formulas in Electrodynamics.pdf
Magnetic Force (F)
F = q(v × B), where q is the charge, v is the velocity of the charge, and B is the magnetic field.
Magnetic Potential Energy (U)
U = -μ · B, where μ is the magnetic moment and B is the magnetic field.
Inductance (L)
L = NΦ/I, where N is the number of turns, Φ is the magnetic flux, and I is the current.
Magnetic Flux (Φ)
Φ = B · A · cos(θ), where B is the magnetic field, A is the area, and θ is the angle between the field and the normal to
the surface.
Maxwell's Equations in Matter
∇ · D = ρ, ∇ · B = 0, ∇ × E = -∂B/∂t, ∇ × H = J + ∂D/∂t, where D is the electric displacement field, ρ is charge density, H is
the magnetic field intensity, and J is the current density.
Page 2 of 6 2 of 6 2026-03-17
Key Formulas in
Electrodynamics – Study
Guide and Reference for
Physics and Engineering
Page 1 of 6Guidehttps://www.stuvia.com/dashboard!@_)#*)(@$)($@*($@)($@*_1 of 6 2026-03-17
, Key Formulas in Electrodynamics Page 2 Key Formulas in Electrodynamics.pdf
Magnetic Force (F)
F = q(v × B), where q is the charge, v is the velocity of the charge, and B is the magnetic field.
Magnetic Potential Energy (U)
U = -μ · B, where μ is the magnetic moment and B is the magnetic field.
Inductance (L)
L = NΦ/I, where N is the number of turns, Φ is the magnetic flux, and I is the current.
Magnetic Flux (Φ)
Φ = B · A · cos(θ), where B is the magnetic field, A is the area, and θ is the angle between the field and the normal to
the surface.
Maxwell's Equations in Matter
∇ · D = ρ, ∇ · B = 0, ∇ × E = -∂B/∂t, ∇ × H = J + ∂D/∂t, where D is the electric displacement field, ρ is charge density, H is
the magnetic field intensity, and J is the current density.
Page 2 of 6 2 of 6 2026-03-17
