Question

If a material has length (l) area of cross-"section A and its resistance is R1, what would
be the Resistance if the length
is reduced to half and area is 2A?​

Answer 1

Answer:

The resistance of a conductor is directly proportional to its length (L) as R ∝ L. Thus doubling its length will double its resistance, while halving its length would halve its resistance. Also the resistance of a conductor is inversely proportional to its cross-sectional area (A) as R ∝ 1/A.