Electricity and Electronics · JHS2 Science

Lesson notes

Learning Objectives

Indicator: B8.4.2.2.1 - Demonstrate the charging and discharging action of a capacitor in a DC electronic circuit

By the end of the lesson, learners can:

Describe the charging and discharging actions of a capacitor when connected to a direct current (DC) source.
Explain the basic function of a capacitor as a temporary store of electrical charge.
Identify how resistors, LEDs, and diodes behave in a simple capacitor circuit.
Construct a simple circuit using a capacitor, resistor, LED, and a DC source, and observe charging and discharging effects.
Explain, in clear sequence, what happens to the current in a capacitor circuit as it charges and as it discharges.

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Curriculum details

Strand: Forces and Energy (Strand 4)
Sub-strand: Electricity and Electronics (4.2)
Content standard: B8.4.2.2 - Demonstrate understanding of the functions of capacitors in relation to LEDs, Diodes and resistors in electronic circuits
Indicator: B8.4.2.2.1 - Demonstrate the charging and discharging action of a capacitor in a DC electronic circuit
Suggested placement: Term 2, Week 10 (Week 22 of the year)
Our suggestion, laid out in curriculum order across three terms of twelve weeks. NaCCA does not fix the week, so follow your school's scheme of learning.
Curriculum reference: Science, Common Core Programme (JHS1-JHS3), 2023, p. 72
Transcribed from the official NaCCA publication. Check this page against the source.

Exemplars (from the NaCCA curriculum)

1. Research information about capacitors in electronic circuits and explain their functions when connected with direct current (DC).
2. Describe the charging and discharging actions of a capacitor and explain the role of LEDs, diodes and resistors in an electronic circuit.