CourseCourseConceptConceptDocumentDocument

CAIE A-Level Physics A2 C 1 Circuit Symbols Used in Examination Papers Questions

Practise recognising examination circuit symbols and distinguishing electrical components by their standard graphical representations.

Syllabus
2028–2030
Course
Physics 9702
Level
A2

Exam points

  • Recognise and interpret standard circuit symbols for electrical components, including sound-emitting devices.

CAIE A-Level Physics A2 C 1 Circuit Symbols Used in Examination Papers Questions question 1

[Maximum number: 3]

A circuit incorporating an ideal operational amplifier (op-amp) is shown in Fig. 7.1.

Fig. 7.1

Fig. 7.1

The variation with temperature θ\theta of the resistance RTR_{\mathrm{T}} of the thermistor is shown in Fig. 7.2.

Fig. 7.2

Fig. 7.2

The output of the op-amp is to be displayed using two light-emitting diodes (LEDs) labelled G and B.
When the temperature of the thermistor is below 4.0∘C4.0^{\circ} \mathrm{C}, only the LED labelled G emits light. The LED labelled B emits light only when the temperature of the thermistor is above 4.0∘C4.0^{\circ} \mathrm{C}.

On Fig. 7.1, draw and label the symbols for the two LEDs.

All question bank results loaded