Module Workbook

Module 18: Physics

Electromagnetic induction and mains power.

Use this workbook to practice core KCSE communication skills and record evidence of progress.

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SECTION: PHYSICS

MODULE: 18

Part A: Units

1. Electromagnetic induction

a. Simple experiments to illustrate electromagnetic induction

b. Induced emf

c. Mutual induction

d. Alternating current generator

e. Direct current generator

f. Fleming's right hand rule

g. Transformers

h. Applications of electromagnetic induction

i. Problems on transformers

2. Mains electricity

a. Sources of mains electricity

b. Power transmission

c. Domestic wiring system

d. Consumption and cost of electrical energy

e. Problems on mains electricity

Part B: Project

Demonstrate induction and analyze household electricity use.

Project Title: Induction and Mains Electricity

Objective: Observe electromagnetic induction and calculate energy costs.

Project Instructions:

1. Perform a simple induction experiment and record observations.
2. Explain induced emf and the role of transformers.
3. Sketch a basic domestic wiring layout with safety points.
4. Calculate the cost of running one appliance for a day.
5. Solve one transformer or mains electricity problem.
6. Consult your coach where necessary.

Evidence to Submit:

• Experiment notes and explanation.
• Wiring sketch and safety notes.
• Cost calculation and problem solution.

Submission

Part C: Training Others

Guide a peer on induction and mains electricity concepts.

Guidance:

• Demonstrate how induction works with a simple setup.
• Explain transformers and their uses.
• Discuss safe domestic wiring practices.

Reflection:

• What did the learner understand well?
• Which part needed more explanation?
• What support do you need from your coach?

Submission

Part D: Assessment

Competency Levels:

1 = Expectations not met

2 = Partially met

3 = Satisfactorily met

4 = Excellently met

Coach assessment: Learner completes the self-assessment using the 1-4 scale. The coach prepares a short quiz or conversation (outside the system if needed) and assigns the coach score.

Self-assessment:

• Electromagnetic induction concepts:
• Generators and transformers:
• Mains electricity and cost calculations:

Coach assessment:

• Electromagnetic induction concepts:
• Generators and transformers:
• Mains electricity and cost calculations:

Submission

Ready for the next module?

Keep your learning rhythm steady and record your reflections as you progress.

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