题目
如图所示,空间有电流I 1、I2、I3,则下列式中-|||-正确的是 () I1 I3-|||-_(L)overrightarrow (B)cdot doverrightarrow (l)=(mu )_(0)((I)_(1)+(I)_(2))-|||-B _(L)overrightarrow (B)cdot doverrightarrow (l)=(mu )_(0)((I)_(1)-(I)_(2))-|||-C _(L)overrightarrow (B)cdot overrightarrow (dT)=(mu )_(0)((I)_(1)+(I)_(2)+(I)_(3))-|||-_(L)overrightarrow (B)cdot doverrightarrow (Cl)=(mu )_(0)(-(I)_(1)+(I)_(2)-(I)_(3))
题目解答
答案
D. ${V}_{L}\overrightarrow {B}\cdot d\overrightarrow {Cl}={\mu }_{0}(-{I}_{1}+{I}_{2}-{I}_{3})$