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An infinite ladder is constructed with 1 Ω and 2 Ω resistors as shown below. Find

Answer» 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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