P 4.5-1 Determine the mesh currents, i₁, i₂, and i₃, for the circuit shown in Figure P 4.5-1.

Answers: i₁ = 3 A, i₂ = 2 A, and i₃ = 4 A

Figure P 4.5-1

Write out the three mesh equations

Rewrite in standard form so they can put into MATLAB for solution

MATLAB Code Follows:

%Program to solve PH 320 Homework Problem P.4.5-1

%version 2019-01-30 DW Donovan

clear all;

RR = [(2 + 3 + 9) (-3) (-9);

(-3) (3 + 6) (-6);

(-9) (-6) (6 + 9)];

VV = [0 -15 21]';

II = RR\VV;

i1 = II(1);

i2 = II(2);

i3 = II(3);

ANS = {['i1 = ' num2str(i1) ' A'];

['i2 = ' num2str(i2) ' A'];

['i3 = ' num2str(i3) ' A']};

ANS

%{

ANS =

'i1 = 3 A'

'i2 = 2 A'

'i3 = 4 A'

%}

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This page last updated on January 30, 2019