P 4.5-5 Find the current i for the circuit of Figure P 4.5-5.

Hint: A short circuit can be treated as a 0-V voltage source.

Figure P 4.5-5

First Identify Mesh Currents

Write out the three Mesh equations

Put these Equations into MATLAB and we get the answers:

MATLAB Code Follows:

%Program to solve PH 320 Homework Problem P.4.5-5

%version 2019-01-31 DW Donovan

clear all;

RR = [(2 + 4) (-2) (-4);

(-2) (2 + 2) 0;

(-4) 0 (4 + 6)];

VV = [0 -10 10]';

II = RR\VV;

i = II(1);

iL = II(2);

iR = II(3);

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

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

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

ANS

%{

ANS =

'i = -0.29412 A'

'iL = -2.6471 A'

'iR = 0.88235 A'

%}

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This page last updated on January 31, 2019