The square waveform of current has following relation between r.m.s value and average value
1
r.m.s. value of current is greater than the average value
2
r.m.s. value of current is less than the average value
3
r.m.s. value of current is equal to the average value
4
There is no definite relation between the r.m.s. value and average value for a square wave