Chapter 6: Magnetism and Electricity
Describing electric circuits
1 Identifying circuit symbols
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.
a) Which of the following are likely to be conductors and which will be insulators? Make a prediction
and draw a circle around each of the conductors and colour the insulators with highlighter.
copper
iron
brass
plastic
carbon (graphite)
glass
.
2 Explaining current
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a) Draw a circuit containing a light bulb, battery and a switch. Annotate your circuit diagram to explain
what is meant by the term ‘current’.
b) Predict what the ammeter readings will be in the following circuit, if:
i) the current at X is 3 A
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ii)
an extra cell is added and the current at Y is 5 A.
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c) If the current shown on A1 is 2 A, what would the reading be on an ammeter connected at X?
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© HarperCollinsPublishers Limited 2014
Chapter 6: Magnetism and Electricity
Worksheet 2.6.11 Describing electric circuits
page 2/3
3 Using models
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a) Draw a model to represent an electrical insulator and an electrical conductor, to explain the
meaning of these two terms.
b) Explain the differences in current in the two circuits shown below.
© HarperCollinsPublishers Limited 2014