General › G5 Electrical Principles › G5B07
G5B07
What value of an AC signal produces the same power dissipation in a resistor as a DC voltage of the same value?
Pick an answer to check it.
Answer: C. The RMS value
The RMS (root mean square) value of an AC voltage heats a resistor exactly as much as the same DC voltage. That is why AC power is calculated with RMS values.
Tip: RMS = DC-equivalent heating value.