Physics 0625 · IGCSE · Electric circuits

Electric circuits — practice question

Fig. 9.1 displays an electric circuit. The labelled components are: buzzer; ammeter (A); voltmeter (V); thermistor.

(a)[3]

Calculate the thermistor’s resistance.

(b)[2]

State and explain how an increase in temperature changes the current through the thermistor.

(c)[1]

Suggest a possible use for the circuit in Fig. 9.1.

Worked solution & mark scheme

This 6-mark question has a full step-by-step worked solution and mark scheme. One marking point: “V = IR OR R = V / I” …