Advanced Qualification · A-003 Measurements · A-003-001-009
Which AC voltage value will produce the same amount of heat as a DC voltage, when applied to the same resistance?
- AThe peak value
- BThe peak-to-peak value
- CThe RMS value
- DThe average value
Correct answer: C — The RMS value. From the official ISED question bank, verified word for word.
Why
The RMS value, which stands for Root Mean Square, is the specific AC measurement that delivers the exact same heating power to a resistor as a DC voltage of the same number. The full explanation — and one for every question — is in Pro.
Practise this section
Measurements is section A-003 of the Advanced exam: Measurements: meters, oscilloscopes, counters, signal generators, and what a reading actually tells you.
Drill A-003 — free, no account