An alternating e.m.f. is given by `E=10 cos omega t`. If the frequency is 50 Hz, then a
Channel: Doubtnut
Date: 2020-05-24

An alternating e.m.f. is given by `E=10 cos omega t`. If the frequency is 50 Hz, then at time `t=(1/600)s` the instantaneous value of e.m.f. is