Data: lk (final wire length) = 1/2 ln (initial wire length); ρ (electrical resistivity) = const; S (wire section) = const.
The change in the resistance of the specified wire after cutting is determined from the ratio: k = Rc / Rn = (ρ * lc / S) / (ρ * ln / S) = lc / ln = 1/2 ln / ln = 1/2.
Answer: After cutting, the resistance of the specified wire will decrease by 2 times.
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