A circular-loop TV antenna with0.02m 2 area is in the presence ofa uniform-ampli

Question

A circular-loop TV antenna with0.02m2 area is in the presence ofa uniform-amplitude 300MHz signal. When oriented for maximumresponse, the loop develops a voltage with a peak value of 30mV.What is the peak magnitude of the magnetic flux density of theincident wave?
A circular-loop TV antenna with0.02m2 area is in the presence ofa uniform-amplitude 300MHz signal. When oriented for maximumresponse, the loop develops a voltage with a peak value of 30mV.What is the peak magnitude of the magnetic flux density of theincident wave?

Explanation / Answer

magnetic flux density B= B * A = (oI/2r) * ( * r^2) =(oI * r/2) o= 4 * 10^-7 Nm^2/C^2 I = e * f e = 1.6 * 10^-19 C and f = 300 MHz = 300 * 10^6 Hz A = * r^2 or r = (A/)^(1/2) A = 0.02 m^2

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