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CAIE A-Level Physics Drawing and Interpreting Circuit Diagrams

Practise completing circuit diagrams with official symbols and relating connections to current, potential difference, resistance, meter polarity and component behaviour.

Syllabus
2028–2030
Course
Physics 9702
Level
A2

Exam points

  • draw and interpret official circuit symbols and their connections in an output circuit
  • choose component symbols and connection arrangements that satisfy a stated circuit function
  • relate symbol choice to current, potential difference, resistance or component behaviour when analysing a circuit

C.2-Drawing and interpreting circuit diagrams question 1

[Maximum number: 2]

An ideal op-amp is incorporated into the circuit of Fig. 8.1.

Fig. 8.1

Fig. 8.1

On Fig. 8.1, draw the symbol for a light-emitting diode (LED), connected at the output of the circuit, such that it emits light when the resistance of the thermistor is less than RTR_{\mathrm{T}}.

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