Introduction
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Chapter 10: Electric circuits
10.1 Introduction (ESCPS)
The study of electrical circuits is essential to understanding the technology that uses electricity in the realworld. In this chapter we will focus on revising content from Grade 11 and extending our understanding of the internal structure of a battery/cell and how this influences what you already know about circuits.
 Units and unit conversions Physical Sciences, Grade 10, Science skills
 Circuit components Physical Sciences, Grade 10, Electric circuits
 Ohm's law  Physical Sciences, Grade 11, Electric circuits
 Series and parallel components  Physical Sciences, Grade 11, Electric circuits
 Equations  Mathematics, Grade 10, Equations and inequalities
Series and parallel networks of resistors:
 Understanding of Ohm's Law.
 The meaning of conservation of charge and energy for different types of circuits.
 Calculations done using series and parallel circuits.
 Solve problems involving current, voltage and resistance for circuits.
Batteries and internal resistance:
 State that a real battery has internal resistance.
 Definition of a load.
 Do experiments of finding the internal resistance of a battery.
 Do calculations by using circuits with batteries with internal resistance.
Evaluating internal resistance in circuits:
 Solve circuit problems using batteries with internal resistance with series, parallel and seriesparallel circuits.
Extension: Wheatstone Bridge:
 Definition of a Wheatstone Bridge.
 Solve problems concerning the Wheatstone Bridge.
 Units and unit conversions Physical Sciences, Grade 10, Science skills
 Circuit components Physical Sciences, Grade 10, Electric circuits
 Ohm's law  Physical Sciences, Grade 11, Electric circuits
 Series and parallel components  Physical Sciences, Grade 11, Electric circuits
 Equations  Mathematics, Grade 10, Equations and inequalities
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Series and parallel resistor networks (Revision)
