3 How can we apply electrical conductivity to the design of products? Look at the picture and answer the questions. (1) An electric kettle gets electricity from a socket through a plug and a cable. Observe the different parts of the electric kettle. If the part is made of metal, put a in the . If the part is made of non-metal, put a . (2) Why do we use metals and non-metals to make different parts of the products? ○ △
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Life Link Why do we often find a strip of plastic or paper inside the battery holder of a new electronic product? higher output, wires are normally made of copper. followed by copper. As silver is expensive and copper is cheaper with Electrical Conductivity and Price of Metals The electrical conductivity of metals is much higher than that of non-metals. However, different metals have different electrical conductivity. Silver is a great electrical conductor,
electrical connectors 2
pin 3
base 1
case 4
plug
socket
electric kettle
outer jacket 5
cable
inner wires 6
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