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1. |
An antenna radiates isotropically over a half-space above a perfectly conducting flat ground plane. If E = 50 mV m–1 rms at a distance of 1 km and the antenna terminal current I = 3.5 A, the radiation resistance will be |
A. | 3.4 Ω |
B. | 4.3 Ω |
C. | 5.2 Ω |
D. | 6.1 Ω |
Answer» B. 4.3 Ω | |