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Physics (AS & A Level) · May / June 2020 · Paper 11 · Question 35

9702Resistance and resistivity

A cylindrical metal wire X has resistance R. The same volume of the same metal is made into a cylindrical wire Y of double the length. What is the resistance of wire Y?

  1. AR
  2. B2R
  3. C4R
  4. D8R

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Correct answer: C. 4R

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