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What is the advantage of the earth-wire ...

What is the advantage of the earth-wire connection in domestic electrical circuits ?

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The earth wire in domestic electrical circuits sends leakage current from metallic parts of appliances to the earth saving the user from an electric shock.
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ZEN PUBLICATION-MAGNETIC EFFECTS OF ELECTRIC CURRENT -Additional question section (Very-short-answer [vsa] type questions)
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  12. What is the advantage of the earth-wire connection in domestic electr...

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  13. On which effect of an electric current does a fuse work ?

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