Physics 9702 · AS & A Level · Resistance and resistivity

Resistance and resistivity — practice question

To complete a circuit, two resistors must be connected between points X and Y, as illustrated. These resistors may be arranged either in series or in parallel. Which arrangement of resistors gives the smallest resistance between X and Y?

  • A20 and $40\,\Omega$, parallel
  • B40 and $100\,\Omega$, parallel
  • C20 and $40\,\Omega$, series
  • D40 and $100\,\Omega$, series

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