The diagram below shows a 3-pin plug used for connecting appliances to the mains electricity socket. Pin Z is the live pin.

1. aName pin X. [1]
2. bName pin Y. [1]
3. cThe fuse has a rating of 13 A. Explain what a "fuse rating of 13 A" means. [1]
4. dState the colour of the insulating plastic of wire P (the neutral wire). [1]
5. eExplain why the fuse is connected to the live wire. [2]
6. fSome appliances are fitted with a two-pin plug. Identify the wire that is missing from the two-pin plug. [1]

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