# The amplitude of the sinusoidally oscillating electric field of a plane wave is 60 V/m . Then the amplitude of the magnetic field is

Q: The amplitude of the sinusoidally oscillating electric field of a plane wave is 60 V/m . Then the amplitude of the magnetic field is

(a) 2 × 107 T

(b) 6 × 107 T

(c) 6 × 10-7 T

(d) 2 × 10-7 T

Sol: $\large c = \frac{E_0}{B_0}$

$\large 3 \times 10^8 = \frac{60}{B_0}$

B0 = 2 × 10-7 T