Physics 0625 · IGCSE · Electric circuits

Electric circuits — practice question

The diagram depicts an electric circuit. The brightness of the light falling on the light-dependent resistor (LDR) increases. What happens to the resistance of the LDR, the current in the fixed resistor and the reading on the voltmeter?

  • Aresistance of LDR decreases; current in fixed resistor increases; reading on voltmeter decreases
  • Bresistance of LDR decreases; current in fixed resistor increases; reading on voltmeter increases
  • Cresistance of LDR increases; current in fixed resistor decreases; reading on voltmeter decreases
  • Dresistance of LDR increases; current in fixed resistor decreases; reading on voltmeter increases

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