Question:
An electromagnetic wave passes through space and its equation is given by E = E₀ sin(ω t - kx). The energy density of the electromagnetic wave in space is:
An electromagnetic wave passes through space and its equation is given by E = E₀ sin(ω t - kx). The energy density of the electromagnetic wave in space is:
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In electromagnetic waves, electric and magnetic energies are equal.
Updated On: Mar 18, 2026
- (1)/(2)₀ E₀²
- (1)/(4)₀ E₀²
- ₀ E₀²
- 2₀ E₀²
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The Correct Option is A
Solution and Explanation
Step 1: Energy density components. Total energy density is sum of electric and magnetic energy densities.
Step 2: Equality of contributions. Each contributes: (1)/(4)₀ E₀²
Step 3: Total energy density. u = (1)/(2)₀ E₀²
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