Find the effective value of current.
`i=2 sin 100 (pi)t + 2 cos (100 pi t + 30^(@))`.

Find the effective value of current i=2+4 cos 100 pi t .

Find the effective value of current i=2+4 cos 100 pi t .

Find the effective value of current i=2+4 cos 100 pi t .

The instantaneous value of current in an A.C. circuit is I=2 sin (100 pi t +pi //3)A .The current will be maximum for the first time at

The instantaneous value of current in an ac circuit is I = 2 sin (100pit + pi//3) A . The current at the beginning (t = 0) will be –

Find the rms value of current i=I_(m)sin omegat from (i) t=0 "to" t=(pi)/(omega) (ii) t=(pi)/(2omega) "to" t=(3pi)/(2omega)

Find the rms value of current i=I_(m)sin omegat from (i) t=0 "to" t=(pi)/(omega) (ii) t=(pi)/(2omega) "to" t=(3pi)/(2omega)

The voltage of A.C source varies with tiem according equation. V = 120 sin 100 pi t cos 100 pi t .Then the frequency of source is