Standard Science Primary 6 Energy

Why are the electrical wires in our homes covered in plastic?

A To prevent electricity from flowing into our bodies.
B To make the wires look neat.
C To increase the flow of electricity.
D To make the wires stronger so they do not break.
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Worked Solution

Step 1: Electricity flows through the metal wires (conductors). Step 2: Plastic is an electrical insulator. Step 3: Covering the wires prevents electric shocks if someone touches them.

Correct answer: To prevent electricity from flowing into our bodies.

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