Physics 0625 · IGCSE · Electrical quantities

Electrical quantities — practice question

A source that provides a steady electromotive force (e.m.f.) is connected across a light-dependent resistor (LDR). An electric current flows through the LDR. The brightness of the light incident on the LDR is decreased. Which row indicates how the resistance of the LDR changes and how the current changes?

  • Aresistance decreases, current decreases
  • Bresistance decreases, current increases
  • Cresistance increases, current decreases
  • Dresistance increases, current increases

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