Physics 9702 · AS & A Level · Resistance and resistivity

Resistance and resistivity — practice question

A car is fitted with sensors to detect the light intensity and temperature of its surroundings. The sensors use a light-dependent resistor (LDR) and a thermistor. The car travels from a warm, dark environment into a cold, bright environment. What changes occur in the resistances of the LDR and thermistor?

  • Aresistance of LDR increases, resistance of thermistor increases
  • Bresistance of LDR increases, resistance of thermistor decreases
  • Cresistance of LDR decreases, resistance of thermistor increases
  • Dresistance of LDR decreases, resistance of thermistor decreases

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