Answer: 1/ ( 0 0 ).
- A √(μ<sub>0</sub>ε<sub>0</sub>)
- B 1/√(μ<sub>0</sub>ε<sub>0</sub>)
- C μ<sub>0</sub>ε<sub>0</sub>
- D 1/(μ<sub>0</sub>ε<sub>0</sub>)
Correct answer: B. 1/√(μ<sub>0</sub>ε<sub>0</sub>)
Explanation: Maxwell showed c = 1/√(μ<sub>0</sub>ε<sub>0</sub>), which evaluates to about 3 × 10<sup>8</sup> m/s.
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.