Physics 9702 · AS & A Level · Resistance and resistivity

Resistance and resistivity — practice question

A wire has a resistance of $30\,\Omega$. A second wire is made from the same material, has the same mass and is three times the length of the first wire. What is the resistance of the second wire?

  • A$10\,\Omega$
  • B$30\,\Omega$
  • C$90\,\Omega$
  • D$270\,\Omega$

Worked solution & mark scheme

This 1-mark question has a full step-by-step worked solution and mark scheme.

  • Full mark scheme, point by point
  • Step-by-step worked solution
  • Write your answer & get it marked instantly by AI