Physics 0625 · IGCSE · Electrical quantities

Electrical quantities — practice question

A copper wire has a resistance of $2.0\,\Omega$. A second copper wire is twice the length of the first wire, and its diameter is twice that of the first wire. What is the resistance of the second wire?

  • A$1.0\,\Omega$
  • B$2.0\,\Omega$
  • C$8.0\,\Omega$
  • D$16.0\,\Omega$

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