The Currents in an Electrical Network Are Given by the Solution

question 42

Multiple Choice

The currents in an electrical network are given by the solution of the system​ $$\left\{ \begin{aligned}I _ { 1 } - I _ { 2 } + I _ { 3 } & = 5 \\3 I _ { 1 } + 4 I _ { 2 } & = 19 \\I _ { 2 } + 3 I _ { 3 } & = 28\end{aligned} \right.$$ ​ where I₁,I₂ and I₃ are measured in amperes.Solve the system of equations using matrices.
​

• A)I₁ = 5,I₂ = 4,I₃ = 8
• B)I₁ = 4,I₂ = 4,I₃ = 8 ​
• C)I₁ = 3,I₂ = 4,I₃ = 8 ​
• D)I₁ = 2,I₂ = 4,I₃ = 8 ​
• E)I₁ = 1,I₂ = 4,I₃ = 8

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