I'm given a rectified half wave, first half of sine wave (lasts 4.0ms) has peak of 10A, followed by a flat line for another 4.0ms how am i supposed to calculate the Irms? I can't apply Irms= Ipeak/ .707 so what should i do? could someone explain why it turns out as 5.0A? 10A/2? if so, why?