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Find the value of I1, I2 and I3.

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Find the value of I1, I2 and I3.

(a) -0.566A, 1.29A, -1.91A

(b) -1.29A, -0.566A, 1.91A

(c) 1.29A, -0.566A, -1.91A

(d) 1.91A, 0.566A, 1.29A
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Right choice is (c) 1.29A, -0.566A, -1.91A

The explanation: Using the matrix method:

Matrix(3,-2,0) (I1)=(5)

         (-2,9,-4) (I2)=(0)

          (0,-4,9) (I3)=(-15)

Solving this matrix equation, we get I1 = 1.29A, I2 = -0.566A and I3 = -1.91A.
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