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Question

Find the ratio of RABRCB from given circuit?       
    


Your Answer
A
23 
Your Answer
B
43    
Correct Answer
C
32 
Your Answer
D
75

Solution

The correct option is D 32 

RAB (For Balanced wheatstone bridge),
RAB=(6+3)×(3+1.5)(6+3)+(3+1.5) 
RAB=3 Ω 

For RBC,
= (((3+6)×9(3+6)+9)×1.5((3+6)×9(3+6)+9+1.5×3(((3+6)×9(3+6)+9×1.5((3+6)×9(3+6)+9+1.5)+3 = 2 Ω 

RABRBC=32
Hence, option (C) matches correctly.  

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