Basic Qualification · B-003 Station assembly, practice and safety · B-003-021-006
How can exposure to a large amount of RF energy affect body tissue?
- A It lowers blood pressure
- B It paralyzes the tissue
- C It restricts blood flow
- D It heats the tissue
Correct answer: D — It heats the tissue. From the official ISED question bank, verified word for word.
Why
Radio frequency energy acts like a microwave oven by making water molecules in your body vibrate, which creates warmth. The full explanation — and one for every question — is in Pro.
Practise this section
Building a station safely: power supplies, grounding, RF exposure, lightning, feedline routing, and what a transmitter, receiver and transceiver actually do.