Calculation: z4XT7n - 1

W  = 
 
 μ* μ0* S* N^2* l^2
/ ( 2* l)
W =  
 μ* μ0* S* N^2* l^2
/ ( 2* l)
$$W$$ = $$\frac{\mu\cdot \mu0\cdot S\cdot N^{2}\cdot l^{2}}{2\cdot l}$$
W =  
 N^2* S* l* μ* μ0
/ 2
$$W$$ = $$\frac{N^{2}\cdot S\cdot l\cdot \mu\cdot \mu0}{2}$$
W =  0.5* N^2* S* l* μ* μ0$$W$$ = $$0.5\cdot N^{2}\cdot S\cdot l\cdot \mu\cdot \mu0$$