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Physics - EM Waves Question with Solution | TestHub

PhysicsEM WavesElectromagnetic wavesMedium3 minQB

PhysicsMediumsingle choice

Passage / Comprehension

In a plane electromagnetic wave, the electric field oscillates sinusoidally at a frequency of $2.0 \times 1 0^{10}$ Hz and amplitude $48$ V m $^{- 1}$ .

What is the amplitude of the oscillating magnetic field?

Options:

Answer:

Solution:

$B_{0} = \frac{E _{0}}{c} = \frac{48}{3 \times 1 0 ^{8}} = 1.6 \times 1 0^{- 7}$ T

Subject:PhysicsTopic:EM WavesSubtopic:Electromagnetic waves

⏱ 3mℹ️ Source: QB

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