Electrostatics · SHS2 Physics

Lesson notes

Learning Objectives

Indicator: 2.3.1.LI.2 - Determine the effective capacitance of a number of capacitors arranged in i. series ii. Parallel.

By the end of the lesson, learners can:

State the formulae for calculating effective (total) capacitance of capacitors connected in series and in parallel.
Distinguish between series and parallel connections by describing how potential difference, total charge and capacitance behave in each arrangement.
Calculate the effective capacitance of two or more capacitors connected in series using the reciprocal formula.
Calculate the effective capacitance of two or more capacitors connected in parallel by direct addition.
Solve mixed problems that require strategic reasoning to identify whether a given circuit arrangement is series or parallel before applying the correct calculation.

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Curriculum details

Strand: Electric Field, Magnetic Field and Electronics (Strand 3)
Sub-strand: Electrostatics (3.1)
Content standard: 2.3.1.CS.2 - Demonstrate knowledge and understanding of the structure and operation of capacitors. 2.3.1.LO.2 Explain and analyse the structure and working principles of capacitors and calculate capacitance.
Indicator: 2.3.1.LI.2 - Determine the effective capacitance of a number of capacitors arranged in i. series ii. Parallel.
Suggested placement: Semester 2, Week 3 (Week 23 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: NaCCA curriculum document, p. 120

Exemplars (from the NaCCA curriculum)

Experiential Learning: Using a laboratory set or science kit, explain series and parallel connections of capacitors and their relationship with respect to potential difference, total charges and capacitance.
Provide equitable access to physics resources, equipment, technology, and opportunities for hands-on experiments or projects, ensuring all learners have equal access to Learning resources and experiences.
Assessment (2.3.1.AS.2). The document marks these depth-of-knowledge levels for this indicator: Level 1 Recall; Level 3 Strategic reasoning.
Teaching and Learning Resources:
- Science experimental kit with capacitors and connectors