Live, Neutral and Earth Wire
Live, Neutral And Earth Wire
Electricity generated at power stations is brought to our homes by two thick copper or aluminium wires. It is supplied through overhead cables or underground cables.There are three types of wire in the domestic circuit. The live wire, the neutral wire and the earth wire.
1. The live wire is at 220 volts with a frequency of 50 Hz.
2. The ground wire is maintained at zero potential by connecting it to a large plate buried in the ground.
3. The neutral wire is also maintained at almost zero potential.
Current enters an appliance through the live wire and returns through the neutral wire. An appliance that consumes relatively low power, e.g., a tube light or a fan, has just two terminals. Using them, the appliance is connected across the live and neutral wires. In two-terminal devices, it does not matter which terminal is connected to the live wire and which, to the neutral.
Why is the switch for any electrical appliance always fitted on to the live wire ? | |||
| Right Option : C | |||
| View Explanation |
Which of the following are correct : (a) The live wire is at 220 volts with a frequency of 50 Hz. (b) The ground wire is maintained at zero potential by connecting it to a large plate buried in the ground. (c) The neutral wire is also maintained at almost zero potential. | |||
| Right Option : B | |||
| View Explanation | |||
Current enters an appliance through the live wire and returns through the ________________________. | |||
| Right Option : B | |||
| View Explanation | |||
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