Physics 2.2.6 Flashcards by AAK Khan | Brainscape

Q

What is the most Dangerous Wire in a Plug, and why?

A

The Live Wire. Because it Carries most of the Power to the Circuit.

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Q

What is the Voltage of the Live Wire?

A

~230V

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Q

What is the Voltage of the Neutral Wire?

A

~0V

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Q

What is the Voltage of the Earth Wire?

A

~0V

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Q

How does the Earth Wire act as an additional Safety Wire? (4)

A

-The Earth Wire Provides a Low Resistance Path to the Earth.

-This causes a Surge of Current in the Earth Wire, and so also in the Live Wire.

-The High Current going through the Fuse causes it to Melt, & Break.

-This Cuts off the Supply of Electricity to the Appliance, making it Safe to touch.

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