Physics 0625 · IGCSE · Electric circuits

Electric circuits — practice question

Fig. 8.1 depicts an electrical circuit. Arrows show light falling on component Y. The voltmeter is connected in the arrangement illustrated.

(a)[3]

State any change in the resistance of component Y. State and explain any change in the voltmeter reading.

(b(i))[3]

Calculate how many electrons pass through the resistor in each second.

(b(ii))[2]

Calculate the power lost in the resistor.

Worked solution & mark scheme

This 8-mark question has a full step-by-step worked solution and mark scheme. One marking point: “RY becomes smaller” …