For the network shown in the figure, the value of the current i is:
A
B
C
D
Text Solution
Verified by ExpertsThe correct answer is:
B
The circuit given resembles the balanced Wheatstone Bridge as 
= 
.
Thus, middle arm containing 4 Ω Ω resistance will be ineffective and no current flows through it.
The equivalent circuit is shown as below:
Net resistance of AB and BC
R' = 4 + 2 = 6 Ω Ω
Net resistance of AD and DC
R'' = 6 + 3 = 9 Ω Ω
Thus, parallel combination of R' and R'' gives
R = 
= 
= 
= 
Ω Ω
Hence, current i = 
= 
= 
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