The average electric field of electromagnetic waves in certain region of free space is 9 × 10-4 NC. Then, the average magnetic field in the same region is of the order of:
Answer & explanation
Correct answer: option 2
Given, $E=9 \times 10^{-4} NC^{-1}$
We know that, $c=\frac{E}{B} \Rightarrow B=\frac{9 \times 10^{-4}}{3 \times 10^8}=3 \times 10^{-12} T$