SHS2 Physics · Semester 2 Week 1: Electrostatics

Lesson notes

Learning Objectives

Indicator: 2.3.1.LI.3 - Determine the Electric field strength/intensity at a point due to a point charge.

By the end of the lesson, learners can:

Define electric field strength (intensity) at a point in words and state its SI unit (N/C or V/m).
State the formula E = F/q and use it to calculate the electric field strength when given force and charge values.
Apply the formula E = kQ/r² to calculate the electric field strength at a given distance from a point charge.
Determine the direction of the electric field at a point: away from a positive charge and toward a negative charge.
Solve combined problems involving Coulomb’s law (from the previous lesson) and electric field strength, showing all working steps clearly.

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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.1 - Demonstrate knowledge and understanding of electric fields 2.3.1.LO.1 Use the concept of electric field to Critical thinking, explain how charges interact
Indicator: 2.3.1.LI.3 - Determine the Electric field strength/intensity at a point due to a point charge.
Suggested placement: Semester 2, Week 1 (Week 21 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.
Source document note: The official curriculum document has a fault in this entry, so the curriculum text above is transcribed exactly as printed:

exemplars - p.118: the document prints this assessment code as 2.3.1.AS.13 beside learning indicator 2.3.1.LI.3
Curriculum reference: NaCCA curriculum document, p. 118

Exemplars (from the NaCCA curriculum)

Talk for Learning: Describe the electrostatic force as when charges are stationary and as the force exerted by two charged particles on each other.
Foster an inclusive and supportive learning environment.
Assessment (2.3.1.AS.13). The document marks these depth-of-knowledge levels for this indicator: Level 1 Recall; Level 2 Skills of conceptual understanding; Level 3 Strategic reasoning.
Teaching and Learning Resources:
- Laptop/Computer
- Projector
- Internet
- Simulation lab software
- Van de Graaff generator
- Flash cards
- Science kit with connectors, resistors and capacitors