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Answer: The colour of the earth wire is generally green and green with yellow stripes in most modern electrical systems. This combination is used for safety, ensuring it is easily distinguishable from other wires. In some older systems, it might just be green, but the green and yellow stripes are the current standard in most countries, including India, as per the IEC (International Electrotechnical Commission) color code. Thus, the correct answer is option D. Green.
Complete Answer:
Here is why the option D. Green is correct answer for the question ‘the colour of the earth write is generally________.
A. Red: This color is generally used for the live or phase wire in older wiring systems, but in newer systems, the live wire is typically brown. The live wire carries the current from the power source to the device.
B. Blue: In modern electrical systems, blue is used for the neutral wire, which completes the circuit by carrying current back to the power source. It is not used for grounding.
C. Black: In older wiring systems, black was often used as a live wire, but in modern systems, it is used as a phase or live wire in three-phase systems, not as an earth wire.
D. Green: The earth wire, also known as the grounding or protective conductor, is typically colored green or green with a yellow stripe in most modern electrical systems. This color coding is standardized to ensure safety and prevent confusion during installation and maintenance. The earth wire is a critical part of the electrical system, as it provides a safe path for excess current to travel to the ground in the event of a fault or short circuit. This reduces the risk of electric shock and protects both people and electrical equipment from potential harm.
Thus, the correct answer is option D. Green.
Common Physics Doubts:
