In an EM wave traveling west, the B field oscillates vertically and has a freque
ID: 1792145 • Letter: I
Question
In an EM wave traveling west, the B field oscillates vertically and has a frequency of 75.0 kHz and an rms strength of 8.20 10-9 T. What are the frequency and rms strength of the electric field, and what is its direction?
In an EM wave traveling west, the B field oscillates vertically and has a frequency of 75.0 kHz and an rms strength of 8.20 x 109 T. what are the frequency and rms strength of the electric field, and what is its direction? (Hint: See the figure below.) frequency kHz ms strength of the electric field V/m along the horizontal east-west line O along the horizontal north-south line 1 Direction of motioen of waveExplanation / Answer
frequency f = 75.0 KHz
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speed of light c = Erms/Brms
rms strength of electric field Erms = c*Brms
Erms = 3*10^8*8.2*10^-9 = 2.46 V/m
along the horizontal north south line
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