Question

Differentiate between the peak value and root mean square value of analternating current.

Answer 1

Parameter	Peak Value (I0)	Root Mean Square (RMS) Value (Irms)
Definition	It is the maximum value reached by an alternating current during one complete cycle.	It is the effective value of AC that produces the same amount of heat in a resistor as DC does.
Value	It is always greater than the RMS value.	It is equal to 70.7% of the peak value (0.707 × I0).
Significance	It represents the highest instantaneous value of the current.	It represents the value used for calculating useful power output and is what ammeters usually measure.