the lenghth of the conductor is halfed its resistance will be
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Doubling the Area of a Conductor
But as well as doubling the area, by connecting the two conductors together in parallel we have effectively halved the total resistance of the conductor, giving 1/2R as now each half of the current flows through each conductor branch.
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We know that Resistance is directly proportional to the length of the conductor.
So, if the length of the conductor is halved , then its resistance will also become half.
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