Basic Qualification · B-003 Station assembly, practice and safety · B-003-016-001
What approximate voltage does a standard automobile starter battery usually supply?
- A 16 volts
- B 28 volts
- C 9 volts
- D 12 volts
Correct answer: D — 12 volts. From the official ISED question bank, verified word for word.
Why
A standard automobile starter battery supplies about 12 volts because it contains six internal cells, each producing roughly 2 volts when fully charged. 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.