Determine the equivalent resistance of the circuit between points A and B.

As we can see from above circuit that R_{1}+R_{2} is connected in parallel fashion with R_{5} as well as with R_{3}+R_{4}.

So, let’s write a code in Matlab in order to calculate an equivalent resistance across terminals A and B.

**Matlab Code for Equivalent Resistance Calcualtion**

%Equivalent Resistance Calculation clear all;close all;clc %%Resistance Values from the Circuit R1= 80;R2= 70;R3= 60; R4= 90;R5= 100; %%Equivalent Resistance Calculation Rx= parallel( R1+R2 , R5); % As mentioned, R1+R2 is in parallel fashion with R5 Req= parallel( R3+R4 , Rx) %Similarly, the above combination is in parallel fashion with R3+r4 %==============================================

**Function parallel.m**

%function to compute parallel resistances function Req=parallel(R1,R2) % Req=(R1.*R2)./(R1+R2); %==============================================

**Results:**

Req =

42.8571