Physics 0625 · IGCSE · Electrical quantities

Electrical quantities — practice question

A car headlamp has a current of $3.0\,\text{A}$ when it is connected to a $12\,\text{V}$ battery. What is the resistance of the lamp when it is illuminated?

  • A$0.25\,\Omega$
  • B$4.0\,\Omega$
  • C$15\,\Omega$
  • D$36\,\Omega$

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