Electromagnetic Waves: the Magnitude of the Electric Field at a Point

Multiple Choice

Electromagnetic waves: The magnitude of the electric field at a point P for a certain electromagnetic wave is 570 N/C. What is the magnitude of the magnetic field for that wave at P? (c = 3.0 × 10⁸ m/s)

A) 2.91 µT
B) 1.90 µT
C) 1.10 µT
D) 1.41 µT
E) 2.41 µT