Answer: displacement current.
- A displacement current
- B conduction current
- C eddy current
- D drift current
Correct answer: A. displacement current
Explanation: Maxwell introduced the displacement current term ε₀ dΦ_E/dt to complete Ampere law.
In an electromagnetic wave, the oscillating electric field (E) and magnetic field (B) are perpendicular to each other and to the direction the wave travels - a purely transverse wave that needs no medium, unlike sound.
Concept context
Maxwell's equations, EM spectrum, properties, and applications of each band.