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It is the minimum required to complete a circuit. You need a live and neutral.

A two pronged plug does not have a saftey Earth connection. The device operated must be double insulated and have no metal parts visible, that could become live.

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Q: Why are there 2 prongs on a plug?
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What is the meant by a three-pronged plug?

A plug with three prongs.


Why are the metal prongs of a plug sealed in plastic and rubber?

The metal prongs of a plug are sealed in plastic and rubber for insulation and safety purposes. This helps to prevent electrical shocks and short circuits by providing a protective barrier between the conductive metal prongs and the user.


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The metal prongs of a plug are sealed in plastic or rubber to provide insulation and protection against electric shock. This covering helps prevent accidental contact with the metal prongs, which carry electricity, making the plug safer to handle and use.


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