SSC
PHYSICS
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Which one is an Earth Wire?
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Brown. Provides the alternating potential difference
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Blue. Completes the circuit and carries away current
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Green and Yellow. Only carries current when there is a fault
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None of the above
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Explanation:
Detailed explanation-1: -Earth wire does not carry any electric current under normal condition, it carries current only when there is a fault in the device. The standard color for neutral wire is black. The color of earth wire is green or green-yellow.
Detailed explanation-2: -The color codes for the four-conductor wire for speaker one are Red (positive), Black (negative), and White or Yellow (positive), Green (negative).
Detailed explanation-3: -Green: The green wires are the grounding/earthing wires in the circuit. The green wire can be connected to another green wire only. The grounding wire is not meant for lights or fans and is used mainly for socket purposes such as in the case of AC’s, geysers and other heavy load appliances.
There is 1 question to complete.