Physics 0625 · IGCSE · Electrical quantities

Electrical quantities — practice question

Which of these statements about the resistance of a metal wire is correct?

  • AThe resistance is directly proportional to its length and directly proportional to its cross-sectional area.
  • BThe resistance is directly proportional to its length and inversely proportional to its cross-sectional area.
  • CThe resistance is inversely proportional to its length and directly proportional to its cross-sectional area.
  • DThe resistance is inversely proportional to its length and inversely proportional to its cross-sectional area.

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