In a plane electromagnetic wave travelling in free space, the electric field component oscillates sinusoidally at a frequency of 2.0 × 10^10 Hz and…

In a plane electromagnetic wave travelling in free space, the electric field component oscillates sinusoidally at a frequency of $\displaystyle 2.0 \times 10^{10} \mathrm{~Hz}$ and amplitude $\displaystyle 48 \mathrm{~V} \mathrm{~m}^{-1}$. Then the amplitude of oscillating magnetic field is : (Speed of light in free space $\displaystyle =3 \times 10^8 \mathrm{~m} \mathrm{~s}^{-1}$ )