Standard Science Primary 5 Systems

Which of the following parts of a wire plug MUST be made of an electrical conductor?

A The cord covering
B The outer casing
C The pins that go into the socket
D The wire grips inside
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Worked Solution

Step 1: A plug connects an appliance to the mains electricity supply. Step 2: Electricity must flow from the socket through the plug to the appliance. Step 3: The pins connect directly to the mains and must conduct electricity (usually made of brass/metal).

Correct answer: The pins that go into the socket

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