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

3.1 × 10−8 T 3 × 10−5 T 3 × 10−6 T 9.3 × 10−6 T

3.1 × 10−8 T

Using the relation $c = \frac{E_0}{B_0}$ $B_0=\frac{E_0}{c}$ $ = \frac{9.3}{3×10^8}=3.1 × 10^{-8}\, T$