If the electric field in an electromagnetic wave 100 mm from a radio-emitting antenna has a...
If the electric field in an electromagnetic wave 100 mm from a radio-emitting antenna has a maximum magnitude of 4.0 × 105 V/m what is the maximum magnetic field magnitude 600 m from the antenna?
Homework Answers
Using Maxwells equation
E/B = c
B = E/c
where c is the speed of Light = 3*10^8 m/s
Electric field at 600 m = 4.0 × 10^5 V/m * 600 m = 2.4 × 10^8 V
Hence required magnetic field, B = 2.4 × 10^8 / 3*10^8 = 0.8 T
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