In a plane electromagnetic wave the electric field oscillates sinusoidally at a frequency 3×1010Hz and amplitude 50 V/m. What is the amplitude of the oscillating magnetic fields?

Amplitude of oscillating magnetic field is Bo=EoCBo=503×108Bo=1.67×10−7T

Amplitude of oscillating magnetic field is Bo=EoCBo=503×108Bo=1.67×10−7T

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In a plane electromagnetic wave the electric field oscillates sinusoidally at a frequency $3 \times 10^{10} H z$ and amplitude 50 V/m. What is the amplitude of the oscillating magnetic fields?

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$1.67 \times 10^{- 7} T$

$0.67 \times 10^{- 2} T$

$1.67 \times 10^{- 2} T$

$0.67 \times 10^{- 5} T$

answer is A.

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Amplitude of oscillating magnetic field is $B_{o} = \frac{E_{o}}{C}$
$B_{o} = \frac{50}{3 \times 10^{8}}$
$B_{o} = 1.67 \times 10^{- 7} T$

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