PD2 Practice Questions 3

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PD2 Practice Questions 3
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  (d) Don uses an electric cooker at
home. His mother likes to use a gas cooker. His
Uncle uses coal for cooking and
heating.   Write about the advantages and
disadvantages of using electricity in the
home.   3
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(e) There are lots of electrical appliances in
Dons kitchen. Look at the table.  
    (i)            Complete the bar chart below.
The first one is done for you.
1     (ii) Each appliance is
switched on for 5 minutes. Which one will cost
the least to run.   Choose from
cooker food mixer kettle microwave toaster
  1
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(iii) The 10 kW cooker is switched on for 0.5
hours. Calculate how many units of energy are
used.   3   (iv) Look at the table
of Dons electrical appliances. Which
electrical appliances in Dons kitchen do not
need an earth wire? Choose from
cooker food mixer kettle
microwave toaster   1   (v)         
The wires in a plug are insulated. They have
different colours. What is the colour of the
live wire?   1 (vi) All
Dons appliances have a fuse in their plugs. Why
are fuses important?   1   (vii) The
toaster has a 13A fuse in its plug. Look at
the diagram.   Explain how the wire
fuse works. 3