Apply the loop rule to loop abcdefghija in Figure 2046 Use t

Apply the loop rule to loop abcdefghija in Figure 20.46. Use the symbols E1, I2, R3, r4 etc., as required.
-(I₁*R₁) +   = 0

Solution

-(i₁*R₁)+E₁-(i₁*r₁)-(i₁*R_s)-(i₃*r₄)-E₄-(i₃*r₃)+E₃-(i₃*R₃) = 0

-(i₁*5)+24-(i₁*0.1)-(i₁*20)-(i₃*0.2)-36-(i₃*0.05)+6-(i₃*78) = 0

-(25.1 i ₁ )-6 -78.25 i ₃ = 0