Physics-Maxwell's Equations
NEET Physics Maxwell's Equations MCQ Question
Type: MCQ-numerical-Medium-Class 12
If an electromagnetic wave in vacuum has an electric field amplitude E₀ = 3.0 V/m, what is the magnitude of the magnetic field amplitude B₀?
A
1.0 × 10⁻⁸ T
B
1.0 × 10⁻⁷ T
C
1.0 × 10⁻⁶ T
D
1.0 × 10⁻⁵ T
Correct Answer
Option B
Detailed Explanation
Using the relation B₀ = E₀/c, where c is the speed of light (3 × 10⁸ m/s), we calculate B₀ = 3.0 V/m / (3 × 10⁸ m/s) = 1.0 × 10⁻⁷ T.
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