A wire has resistance 4 ohm when it is doubled on it. What is its new resistance.?
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When the wire is doubled on itself, its length becomes halved (L/2) and area of cross-section becomes doubled (2 A).
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resistance wire is doubled on it. ... When the wire is doubled on itself, its length becomes halved (L/2) and area of cross-section becomes doubled (2 A).
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