Расчет: VRctDn - 1

F  = 
 
 2* 10^(-7)* μ* I1* I2* l
/ r
F =  
 2* 10^(-7)* μ* I1* I2* l
/ r
$$F$$ = $$\frac{2\cdot 10^{(-7)}\cdot \mu\cdot I1\cdot I2\cdot l}{r}$$
F =  
 I1* I2* l* μ
/ 5000000/ r
$$F$$ = $$\frac{I1\cdot I2\cdot l\cdot \mu}{5000000\cdot r}$$
F =  
 0.0000002* I1* I2* l* μ
/ r
$$F$$ = $$\frac{0.0000002\cdot I1\cdot I2\cdot l\cdot \mu}{r}$$
F =  
 2* I1* I2* l* μ* 10^(-7)
/ r
$$F$$ = $$\frac{2\cdot I1\cdot I2\cdot l\cdot \mu\cdot 10^{(-7)}}{r}$$