Physics 0625 · IGCSE · Electrical quantities

Electrical quantities — practice question

The resistance of one wire is $8.0\ \Omega$. A second wire made from the same material is twice as long and has twice the cross-sectional area. What is the resistance of the second wire?

  • A$4.0\ \Omega$
  • B$8.0\ \Omega$
  • C$16\ \Omega$
  • D$32\ \Omega$

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