3.4.1

Circuit Symbols

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Circuit Symbols

There are many electrical components that can be placed in a circuit. These components can be represented by symbols.

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Common components

  • Voltmeter: measures the potential difference (V).
  • Ammeter: measures the current (A).
  • Open switch: current cannot flow.
  • Closed switch: current is able to flow.
  • A cell: provides the potential difference. A cell is commonly called a battery.
  • A battery: more than one cell.
  • Lamp: if the circuit is complete, the lamp will light up.
  • Fuse: if the current is too high, the fuse will ‘blow’.

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1Biology

1.1Cells, Tissues & Organs

1.2Reproduction & Variation

1.3Ecological Relationships & Classification

1.4Digestion & Nutrition

1.5Plants & Photosynthesis

1.6Biological Systems & Processes

2Chemistry

2.1Particles

2.2Chemical Reactions

2.3Atoms, Elements, Compounds

2.4The Periodic Table

2.5Materials & the Earth

2.6Reactivity

2.7Energetics

2.8Properties of Materials

3Physics

3.1Energy

3.2Forces & Motion

3.3Waves

3.4Electricity & Magnetism

3.5Matter

3.6Space Physics

4Thinking Scientifically

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