Electronics and Communication Engineering - Exam Questions Papers - Discussion
Discussion Forum : Exam Questions Papers - Exam Paper 5 (Q.No. 43)
43.
An infinite ladder is constructed with 1 Ω and 2 Ω resistors as shown below. Find i
Answer: Option
Explanation:
As ladder is infinite
∴ 
2R + R2 = 2 + 3R
R2 - R - 2 = 0
∴ 
R = 2 or R = -1
Negative value of R is not possible
∴ R = 2
∴ 
i = 9 A.
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