A:sinθ<tanθ<cosθ
B:tanθ<sinθ<cosθ
C:tanθ<cosθ<sinθ
D:sinθ<cosθ<tanθ
如图两条通电直导线平行放置,长度为L1的导线中电流为I1,长度为L2的导线中电流为I2,L2所受L1的磁场力大小为F,则L2所在处由L1 产生的磁场的磁感应强度大小为( )
一Doctor, is there anything wrong with my eyes?
一No. is OK.