Grade 11 Physical Sciences Term 3 Lesson on Electrical Energy and Cost PDF 1uqbfo

On this page you will find a Western Cape Education Department Grade 11 Physical Sciences lesson for Term 3 Week 6, on electrical energy, power, and cost. It explains the meaning and units of key symbols like voltage, current, resistance, and power, and how to calculate electricity costs in kilowatt hours. Linked video resources support learners in working through worked examples step by step. A clear five-step method is given for approaching exam-style electrical calculation questions. This lesson helps Grade 11 learners confidently calculate electrical energy and costs, a practical Term 3 Physical Sciences skill.

The following document, Physical Sciences Grade 11 Term 3 Week 6 2020.pdf, is the full document.

Term 3 Content Brief

Grade 11 Physical Sciences Term 3 Lesson on Electrical Energy and Cost PDF 1uqbfo

“Energy is provided and measured in kilowatt hour (kWh). Units = Power (kW) x time (hours).” “Cost = Units x Price per unit.” The lesson also covers the meaning and units of symbols W, V, I, R, t and P.

WCED Grade 11 Physical Sciences Week 6 lesson on Electrical Energy, Power and Cost, covering the meaning of key electrical symbols and a worked exam example calculating the cost of running a geyser.

Calculate electrical energy usage in kilowatt-hours; calculate the cost of running an electrical appliance; identify and apply the correct formula given circuit variables; understand the practical importance of power and cost calculations for appliance use.

Grade 11

Subject Physical Sciences

Year 2020

Curriculum South African (CAPS)

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