Big Ideas: More info...
Class practical: a problem-solving activity, using the concept of resistance in the context of a concert sound system.
Class praticals: determining resistance from measurements of potential difference (p.d.) and current.
Demonstration: gases conduct electricity, but they have to be ionised first.
Demonstration: an introduction to what voltmeters measure and how they are connected in circuits.
Having demonstrated what is involved in measuring voltages, the pupils are now given the opportunity to make some measurements...
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