Physics 0625 · IGCSE · Electrical quantities

Electrical quantities — practice question

There are four wires, and each one is made from the same metal. Which wire will have the largest resistance?

  • Aa $100\,\text{cm}$ long wire with a diameter of $3.0\,\text{mm}$
  • Ba $100\,\text{cm}$ long wire with a diameter of $6.0\,\text{mm}$
  • Ca $10\,\text{cm}$ long wire with a diameter of $3.0\,\text{mm}$
  • Da $10\,\text{cm}$ long wire with a diameter of $6.0\,\text{mm}$

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