Q3Basic Electrical Engineering
Question
Q.3 Define root mean square (RMS) value.
Answer
The Root Mean Square (RMS) value constitutes the precise effective value of an alternating current that produces the exact identical thermal heating effect as an equivalent direct current.
The Root Mean Square (RMS) or effective value is the universally standard method used to mathematically specify the magnitude of continuously varying alternating current (AC) waveforms. It is fundamentally defined based completely on the absolute physical heating effect produced in a resistor.
Strictly speaking, the RMS value of an AC current is algebraically equal to the exact magnitude of a steady Direct Current (DC) that rigorously generates the exact same amount of thermal energy (heat) when flowing through the identical resistance over an identical period of time.