Advanced Qualification · A-003 Measurements · A-003-001-011
A sine wave of 17 volts peak is equivalent to how many volts RMS?
- A 12 volts
- B 24 volts
- C 34 volts
- D 8.5 volts
Correct answer: A — 12 volts. From the official ISED question bank, verified word for word.
Why
To find the root mean square, or RMS, value of a sine wave, you multiply the peak voltage by roughly 0.707. The full explanation — and one for every question — is in Pro.
Practise this section
Measurements: meters, oscilloscopes, counters, signal generators, and what a reading actually tells you.