Practice question

**Relationship E and B** in EM wave E₀ = c B₀, B₀ = E₀/c, for vacuum. Fields sustain each other via Maxwell's equations ∇×E = -∂B/∂t, ∇×B = μ₀ ε₀ ∂E/∂t, time-varying E produces B and vice versa, self-sustaining propagation without medium, speed c. The document states that in an electromagnetic wave, the electric and magnetic fields oscillate sinusoidally, are perpendicular to each other, and are perpendicular to the direction of propagation. Using c = fλ, E₀/B₀ = c, I_d = ε₀ dΦ_E/dt, and spectrum classification λ = c/f, evaluation yields Perpendicular to each other and to the direction of propagation, illustrating EM wave transverse