Exploring EMF and the Cost of Electricity
Exploring EMF and the Cost of Electricity
Learning objective
Items in this lesson
Exploring EMF and the Cost of Electricity
Learning objective
Electricity Cost Basics
Electricity cost depends on power usage and tariff rates. Measured in kilowatt-hours.
Learning Objectives
At the end of the lesson you will understand EMF, calculate electricity costs, and apply these concepts practically.
What do you already know about electromotive force and how electricity is billed?
Understanding EMF
EMF, or electromotive force, is the energy provided by a cell or battery per coulomb of charge. Measured in volts.
EMF vs Voltage
EMF is the total energy supplied, while voltage is the energy used across components.
Calculating EMF
EMF = V + Ir, where V is voltage, I is current, and r is internal resistance.
Interactive Activity
Students calculate costs using different appliances and present their findings.
Write down 3 things you learned in this lesson.
Write down 2 things you want to know more about.
Calculating Power Usage
Power (kW) = Voltage (V) x Current (I). Cost = Power x Time x Tariff.
Ask 1 question about something you haven't quite understood yet.
