Physics 9702 · AS & A Level · Resistance and resistivity

Resistance and resistivity — practice question

A metal wire with length $0.50\,\text{m}$ has resistance $12\,\Omega$. What resistance will a wire of length $2.0\,\text{m}$ have if it is made from the same material but has half the diameter?

  • A$12\,\Omega$
  • B$48\,\Omega$
  • C$96\,\Omega$
  • D$192\,\Omega$

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