Physics 9702 · AS & A Level · Resistance and resistivity

Resistance and resistivity — practice question

A fixed resistor and a filament lamp are connected in series to a power supply. The $I$-$V$ characteristics of both components are shown. The current in the fixed resistor is $0.34\,\text{A}$. What is the resistance of the filament lamp?

  • A$0.081\,\Omega$
  • B$12\,\Omega$
  • C$15\,\Omega$
  • D$18\,\Omega$

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