Physics 0625 · IGCSE · Electric circuits

Electric circuits — practice question

The diagram illustrates a circuit in which a fixed resistor is connected in series with a thermistor and an ammeter. Which row indicates the effect of a temperature change on the thermistor’s resistance and on the current in the circuit?

  • Atemperature decreases; resistance of thermistor decreases; current increases
  • Btemperature decreases; resistance of thermistor increases; current decreases
  • Ctemperature increases; resistance of thermistor decreases; current decreases
  • Dtemperature increases; resistance of thermistor increases; current increases

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