Mutual inductance between the two coils is K = √L1.L2
K = √2 × 8
k = √16
k = 4 H
The direction of the arrow represents the direction of the conventional current flow when the diode is forward biased.
The average value of the sine wave over one complete cycle is actually zero. Hence, for a sine wave, the average value is defined over half the period. The average value expressed in terms of peak value is given by
Average value = 0.637 × peak value