Physics 9702 · AS & A Level · Resistance and resistivity

Resistance and resistivity — practice question

A thermistor’s resistance varies with its temperature, while a light-dependent resistor (LDR) has a resistance that varies with the illumination. In which conditions is the resistance of both a thermistor and an LDR greatest?

  • Athermistor: highest temperature; LDR: highest illumination
  • Bthermistor: highest temperature; LDR: lowest illumination
  • Cthermistor: lowest temperature; LDR: highest illumination
  • Dthermistor: lowest temperature; LDR: lowest illumination

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