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CAIE A-Level Physics 21.2.3 Full-Wave Bridge Rectification

Practise explaining four-diode bridge rectification, tracing current paths during both input half-cycles and identifying the output polarity.

Syllabus
2028–2030
Course
Physics 9702
Level
A2

Exam points

  • explain how four diodes in a bridge rectifier produce full-wave rectification
  • identify current paths and output polarity during both half-cycles

21.2.3—The use of four diodes (bridge rectifier) for the full-wave rectification of question 1

[Maximum number: 2]

A circuit contains a power supply that provides a sinusoidal alternating input voltage VIN V_{\text {IN }}. There is an output voltage VOUT V_{\text {OUT }} across a load resistor R, as shown in Fig. 7.1.

Fig. 7.1

Fig. 7.1

State the purpose of the circuit in Fig. 7.1.

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