Physics 0625 · IGCSE · Electrical quantities

Electrical quantities — practice question

The table gives details of four different resistance wires. Each one is made from the same metal. Which wire has the lowest resistance?

  • Alength $2.0\,\text{m}$, diameter $1.0\,\text{mm}$
  • Blength $2.0\,\text{m}$, diameter $1.5\,\text{mm}$
  • Clength $3.0\,\text{m}$, diameter $1.0\,\text{mm}$
  • Dlength $3.0\,\text{m}$, diameter $1.5\,\text{mm}$

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