Mục lục

  • Electrical Installation Work

  • Copyright Page

  • Table of Contents

  • Preface

  • Mapping to City and Guilds 2330 Certificate in Electrotechnical Technology

  • Chapter 1 Basic information and calculations

    • Units

    • Indices

    • Simple algebra

    • Formulae or equations

    • Manipulation or transposition of formulae

    • The theorem of Pythagoras

    • Basic trigonometry

    • Areas and volumes

    • Chapter 2 Electricity

      • Molecules and atoms

      • Potential difference

      • Electron flow and conventional current flow

      • Conductors and insulators

      • Electrical quantities

      • Ohm’s law

      • Electricity and the human body

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