Physics 9702 · AS & A Level · Resistance and resistivity

Resistance and resistivity — practice question

A wire with a cylindrical shape is $10\text{ m}$ long and has a diameter of $2.0\text{ mm}$. Its resistance is $0.050\,\Omega$. Which material is the wire made from?

  • Abronze, resistivity $1.6 \times 10^{-7}\,\Omega\text{ m}$
  • Bnichrome, resistivity $1.6 \times 10^{-6}\,\Omega\text{ m}$
  • Csilver, resistivity $1.6 \times 10^{-8}\,\Omega\text{ m}$
  • Dzinc, resistivity $6.3 \times 10^{-8}\,\Omega\text{ m}$

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