General exam question G0A01
Subelement G0, ELECTRICAL AND RF SAFETY· Group G0A
What is one way that RF energy can affect human body tissue?
- A.It heats body tissue (correct answer)
- B.It causes radiation poisoning
- C.It causes the blood count to reach a dangerously low level
- D.It cools body tissue
WhyRF energy can affect human body tissue by heating it. RF energy absorbed by body tissue is converted into heat, the same basic mechanism a microwave oven uses, and that heating effect is the primary biological concern behind the FCC's RF exposure limits, answer A. RF at amateur power levels doesn't cause radiation poisoning or lower blood counts (those are effects of ionizing radiation, a different physical phenomenon entirely), and it doesn't cool tissue, so B, C, and D are wrong.
Published 2026-08-28 · Last updated 2026-08-28 · Question text is verbatim from the 2023-2027 NCVEC Element 3 pool (public domain); the explanation above is original writing, see our methodology.
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