3.4.4

Measuring Current

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Measuring Current

Current is the flow of electrical charge. We are able to measure it using an ammeter.

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Ammeters

  • An ammeter is the device used to measure current.
  • It is measured in amps, which is short for amperes.
  • The symbol we used for amps is an ‘A’.
  • Another device that is able to measure current is called a multimeter.
  • Ammeters are added to the circuit in series.
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Flow direction

  • Electrons flow from the negative terminal to the positive terminal.
  • In 1750, the American scientist Benjamin Franklin was one scientist who wrongly believed current moved from the positive to the negative.
  • Even though we now know that this is wrong, we still name Franklin's theory ‘conventional current'.

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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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