The magnetic field of an electromagnetic wave has a peak value of 5.0 × 10-10 T. What is the intensity of the wave? (c = 3.0 x 108 m/s, c = 3.00 × 108 m/s, ?0 = 4? × 10-7 T ? m/A, u0 = 8.85 × 10-12 C2/N ? m2)
Answer
7.5 × 105 W/m2
3.0 × 10-5 W/m2
2.0 × 10-13 W/m2
1.0 × 10-13 W/m2
1.5 × 10-5 W/m2