Question

At some instant and location, the electric field associated with an electromagnetic wave in vacuum has the strength 99.3 V/m. Find the magnetic field strength, the energy density, and the power flow per unit area, all at the same instant and location.

magnetic field strength: T

energy density: J/m³

power flow per unit area: W/m²

Answer 1

Bo - EO - 99-3 = 33.1 X10 T 3x108 energy density = E. E² - - 8.854 x 10-22 x 99-3899.3 = 8.73 X60° Ilk Power flow per unit area - Lcco E2 - 1 x 3 x 108 x 8.854x1012 X 99.3 x 99.3 = 13.09 W/m2

Answer 2

power flow per unit area is incorrect. You don't have to multiply by 1/2.