P 4.6-8 Determine values of the mesh currents, i₁, i₂, and i₃, in the circuit shown in

Figure P 4.6-8.

Figure P 4.6-8

The 2 A source means we have a supermesh with the i₁ and i₃ currents. That produces the following two equations:

and

And the remaining mesh equation for i₂ is

Rewrite into more standard form for MATLAB

Put into MATLAB and we find

MATLAB Code Follows:

%Program to solve PH 320 Homework Problem P.4.6-8

%version 2019-02-02 DW Donovan

clear all;

RR = [1 0 -1;

(1) -(1+4) (4+1);

-(1) (1+4+2) -(4)];

VV = [2 3 0]';

II = RR\VV;

i1 = II(1);

i2 = II(2);

i3 = II(3);

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

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

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

ANS

%{

ANS =

'i1 = 3 mA'

'i2 = 1 mA'

'i3 = 1 mA'

%}

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This page last updated on February 2, 2019