Physics 9702 · AS & A Level · Resistance and resistivity

Resistance and resistivity — practice question

A resistor and a filament lamp are connected in series to a power supply. The $I\text{-}V$ characteristics for the resistor and the lamp are shown. The potential difference (p.d.) across the resistor is $3.3\,\text{V}$. What is the resistance of the lamp?

  • A$0.071\,\Omega$
  • B$4.2\,\Omega$
  • C$11\,\Omega$
  • D$14\,\Omega$

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