If The Wire is Stretched to Double Its Length

The resistance of a wire of length l and area of cross-section a is x ohm. If the wire is stretched to double its length, its resistance would become :

  1. 2 x ohm
  2. 0.5 x ohm
  3. 4 x ohm
  4. 6 x ohm
Anurag Mishra Professor Asked on 30th September 2015 in Physics.
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1 Answer(s)

Answer: (1) 2 x ohm 

Anurag Mishra Professor Answered on 14th July 2016.
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