Electromagnetic Waves – E and B Amplitudes

2023 1 question

1. 1 Electromagnetic Waves Easy
   In a plane electromagnetic wave travelling in free space, the electric field component oscillates sinusoidally at a frequency of $2.0\times10^{10}\ Hz$ and amplitude $48\ Vm^{-1}$. Then the amplitude of oscillating magnetic field is: (Speed of light in free space $=3\times10^8\ ms^{-1}$)
   A $1.6\times10^{-6}\ T$ B $1.6\times10^{-9}\ T$ C $1.6\times10^{-8}\ T$ D $1.6\times10^{-7}\ T$
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