Electromagnetism · SHS2 Physics

Lesson notes

Learning Objectives

Indicator: 2.3.2.LI.2 - Explain force on a moving charged particle in an electric field.

By the end of the lesson, learners can:

Explain that a charged particle moving through an electric field experiences a force whose magnitude depends on the charge of the particle and the strength of the electric field.
State that the direction of the force on a positive charge is along the direction of the electric field, while the direction of the force on a negative charge is opposite to the electric field.
Describe how the motion of a charged particle changes when it enters an electric field at different angles (parallel, perpendicular, and at an angle).
Use the relationship F = qE to calculate the force on a charged particle in a uniform electric field.
Compare the behaviour of a charged particle in an electric field with its behaviour in a magnetic field, noting key similarities and differences.

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Curriculum details

Strand: Electric Field, Magnetic Field and Electronics (Strand 3)
Sub-strand: Electromagnetism (3.2)
Content standard: 2.3.2.CS.3 - Demonstrate knowledge and understanding of the force exerted on a charged particle moving in electric and magnetic fields, and their applications 2.3.2.LO.3 Demonstrate knowledge of the relationship between the magnetic field and the electric field.
Indicator: 2.3.2.LI.2 - Explain force on a moving charged particle in an electric field.
Suggested placement: Semester 2, Week 10 (Week 30 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. 130

Exemplars (from the NaCCA curriculum)

Experiential Learning: Using video simulations explain the main factors that affect charged particles moving in the magnetic field i.e., the direction of the field, the direction of the particle and the charge of the particle.
Assessment (2.3.2.AS.2). The document marks these depth-of-knowledge levels for this indicator: Level 3 Strategic reasoning.
Teaching and Learning Resources:
- Laptop/ Computer
- Projector
- Internet
- Simulation lab software
- Science kit set