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प्रश्न
According to the old convention, the colour of the earth wire is ______.
विकल्प
Black
Green
Yellow
Red
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उत्तर
According to the old convention, the colour of the earth wire is green.
Explanation:
According to the old convention, the colour of the earth wire is green. This is in contrast to the modern convention where the earth wire is often green or yellow and green, while other colours have changed for live and neutral wires.
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