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10.1 Introduction

Chapter 10: Electric circuits

10.1 Introduction (ESCPS)

The study of electrical circuits is essential to understanding the technology that uses electricity in the real-world. 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 series-parallel 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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