Deep Dive: G0A01
The correct answer is A: It heats body tissue. One way that RF energy can affect human body tissue is that it heats body tissue. RF energy is absorbed by body tissue and converted to heat, which is the primary biological effect. For amateur radio operators, this is why RF exposure limits are important. Understanding this helps ensure safe operation.
Why Other Answers Are Wrong
Option B: Incorrect. RF energy doesn't cause radiation poisoning - that's from ionizing radiation (X-rays, gamma rays), not RF. RF is non-ionizing. Radiation poisoning is wrong. Option C: Incorrect. RF energy doesn't cause blood count to reach dangerously low level - that's not a known RF effect. Blood count isn't affected. Option D: Incorrect. RF energy doesn't cool body tissue - it heats it. Cooling is wrong.
Exam Tip
RF energy effect on body = heats body tissue. Think 'R'F 'E'nergy = 'R'aises 'E'levated temperature (heats). RF energy is absorbed by body tissue and converted to heat. Not radiation poisoning, not blood count, not cooling - just heats tissue.
Memory Aid
RF energy effect on body = heats body tissue. Think 'R'F 'E'nergy = 'H'eats. RF energy is absorbed by body tissue and converted to heat. Primary biological effect of RF exposure.
Real-World Example
RF energy exposure: When RF energy is absorbed by body tissue, it's converted to heat - similar to how a microwave oven heats food. This heating effect is the primary biological effect of RF exposure. This is why RF exposure limits (MPE - Maximum Permissible Exposure) are important - to prevent excessive heating. RF energy heats body tissue.
Source & Coverage
Question Pool: 2023-2027 Question Pool
Subelement: G0A
Reference: FCC Part 97.13
Key Concepts
Verified Content
Question from the official FCC General Class pool. Explanation reviewed by licensed amateur radio operators and mapped to the G0A topic.