The oscillating magnetic field in a plane electromagnetic wave is g...

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The oscillating magnetic field in a plane electromagnetic wave is given by
P
\[
B=\left(8 \times 10^{-6}\right) \sin \left[2 \times 10^{11} \mathrm{t}+300 \pi \mathrm{x}\right] \mathrm{T}
\]
W
(i) Calculate the wavelength of the electromagnetic wave.
(ii) Write down the expression for the oscillating electric field.
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