[单选题]
The primary of a transformer has 10p8 ww n;g7ba;p0 turns and its secondar lo nqkm 4cdmx3ukg/).b;n:4 qy has 200 turns. If the power input to u)q4;/ lqgmcdb3.ok km: nnx4the primary is 100 W, we can expect the power output of the secondary to be (neglecting frictional losses)
A. 50 W.
B. 100 W.
C. 200 W.
D. none of the given answers
