An AM radio station in Santa Barbara, KZSB-AM, broadcasts at 1290 kHz. At a distance r=10 km from the antenna the signal is found to have an electric field strength of 25 mV/m, polarized vertically (z-direction). Using a plane-wave approximation, what is the magnitude and direction of the magnetic field, H, at this distance (r=10 km)? Here r is the radius from the antenna measured along the ground, perpendicular to z-direction.

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really just two things being asked here: the magnitude of H, and the direction of H. regarding the latter, think of the problem in cylindrical coordinates
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An AM radio station in Santa Barbara, KZSB-AM, broadcasts at 1290 kHz. At a
distance r=10 km from the antenna the signal is found to have an electric field strength
of 25 mV/m, polarized vertically (z-direction). Using a plane-wave approximation,
what is the magnitude and direction of the magnetic field, H, at this distance (r=10
km)? Here r is the radius from the antenna measured along the ground, perpendicular
to z-direction.
Transcribed Image Text:really just two things being asked here: the magnitude of H, and the direction of H. regarding the latter, think of the problem in cylindrical coordinates Handwrite and step by step solutions An AM radio station in Santa Barbara, KZSB-AM, broadcasts at 1290 kHz. At a distance r=10 km from the antenna the signal is found to have an electric field strength of 25 mV/m, polarized vertically (z-direction). Using a plane-wave approximation, what is the magnitude and direction of the magnetic field, H, at this distance (r=10 km)? Here r is the radius from the antenna measured along the ground, perpendicular to z-direction.
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