Find the resistance between A and B.

Asked by divyankakumari0607 | 30th Dec, 2021, 10:38: AM

Expert Answer:

In the given figure , we see that 7Ω resistor and 19 Ω resistors are shorted .
Hence after removing those shorted resistors , simplified circuit is shown in the figure
 
Equivalent resistance of parallel combination of 3 Ω and 9 Ω  = ( 3 × 9 ) / (3+9) = 2.25 Ω 
 
Equivalent resistance of parallel combination of 13 Ω and 17 Ω  = ( 13 × 17 ) / (13+17) = 7.37 Ω
 
Total resistance across A and B = ( 2 + 2.25 + 11 + 7.37 + 21 ) Ω = 43.62 Ω

Answered by Thiyagarajan K | 30th Dec, 2021, 11:36: AM