Physics 9702 · AS & A Level · Resistance and resistivity

Resistance and resistivity — practice question

A metal cube has a resistance of $4.0\,\Omega$ measured across opposite faces. Ten of these cubes are joined to form a cuboid of $1 \times 2 \times 5$ cubes. No additional resistance is present at the surfaces where the cubes are in contact. What is the resistance of the cuboid when it is connected between faces X and Y?

  • A$1.6\,\Omega$
  • B$2.0\,\Omega$
  • C$10\,\Omega$
  • D$40\,\Omega$

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