Then the induced electromotive force E=BLv=BLv0cos2πTt,
The valid values are E=22Em=22BLv0.
Therefore, the average power of the driving force acting on the rod is p = e2r = (22blv0) 212r = b2l2v20r.
So choose B.
1, the essence of mathematics is its freedom. cornel
2. Mathematics has made an important contribution to observing nature. It explains the simple