Question

The magnetic field in a plane electromagnetic wave is given by,

B_y = 2 × 10^–7 sin(π × 10³x + 3π × 10¹¹t)T

Calculate the wavelength.

(1) π × 10^–3 m

(2) π × 10³ m

(3) 2 × 10^–3 m

(4) 2 × 10³ m