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Textbook Expert
Textbook ExpertVerified Tutor
9 Nov 2021

Given information

Given Data :
 
Resistance 1,  
 
Resistance 2,  
 
Resistance 3, (  
 
Internal resistance  
 
emf 1  
 
emf 2   

 

Each battery has an internal resistance, so it becomes
 
Resistance 1,  
 
 
Resistance 3,

 

Step-by-step explanation

Step 1.

Consider Loop 1 and Loop 2 as shown in the figure :

 

Using Kirchoff's law :

From figure,
By Junction rule, we have
 

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