Basic Qualification · B-003 Station assembly, practice and safety · B-003-018-006
Which body organ can be fatally affected by a very small amount of electrical current?
- A The heart
- B The brain
- C The liver
- D The lungs
Correct answer: A — The heart. From the official ISED question bank, verified word for word.
Why
The heart is the only organ that can stop beating from a tiny electrical shock because it relies on precise electrical signals to pump blood. 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.