BITSAT2011PhysicsElectromagnetic WavesActual
An electromagnetic wave passes through space and its equation is given by E = E ₀ ( t - kx ) where E is electric field. Energy density of electromagnetic wave in space is
Options
- A1 2 ₀ E ₀²
- B1 4 ₀ E ₀²
- C₀ E ₀²
- D2 ₀ E ₀²
Correct answer
A. 1 2 ₀ E ₀²
Step-by-step solution
Energy density = ₀ E _ rm ²= ₀ ( E ₀ 2 )²= 1 2 ₀ E ₀²