Solving currents in a Circuit (7 × 7 system)

We can write this very simply. We just write the coefficient matrix with an index of -1 and multiply it by the constant matrix.

The answer means that the required currents are (to 4 decimal places):

I₁ = -0.4680 A

I₂ = 0.4293 A

I₃ = 0.0005 A

...

I₇ = 0.2091 A