Q. A plane Electromagnetic Waves travels in free space along $x$-axis. At a particular point in space, the electric field along $y$-axis is 9.3 Vm$^{-1}$. The magnetic induction is
A) $3.1\ \times \ 10^{- 8}\ T$
B) $3 \times \ 10^{- 5}\ T$
C) $3\ \times \ 10^{- 6}\ T$
D) $9.3 \times \ 10^{- 6}\ T$
Explanation
(a) Using the relation
$c\ = \ \frac{E_{0}}{B_{0}}$
$B_{0} = \frac{E_{0}}{c}$
$= \frac{9.3}{3\ \times \ 10^{8}}\ = \ 3.1\ \times \ 10^{- 8}\ T$
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.