Why is the live wire called the phase wire?

Answer:

The live wire is called the phase wire because it carries the alternating current (AC) that alternates in phase with the voltage, providing power to electrical devices.

Reasoning:

The term “live wire” refers to the wire that carries the alternating current (AC) from the power source to electrical devices. In an AC system, the voltage alternates between positive and negative values. The live wire is so named because it is the wire through which the current “lives” or flows. The term “phase” is used because the voltage and current are in phase, meaning they reach their peak values at the same time. This synchronization is crucial for the proper functioning of electrical systems.

FAQs:

Q: Why is the live wire called the phase wire?

A: It’s called the phase wire because it carries alternating current in phase with the voltage.

Q: What is the significance of the live wire in electrical systems?

A: The live wire carries the alternating current that powers electrical devices.

Q: Are live wires always in phase with voltage?

A: Yes, the live wire is designed to be in phase with the voltage for proper functioning.

Q: Is the live wire the same as the neutral wire?

A: No, the neutral wire completes the circuit, while the live wire carries the current.

Q: Why is synchronization between voltage and current important?

A: Synchronization ensures efficient and safe operation of electrical devices.

Q: Can the live wire be dangerous?

A: Yes, it can be dangerous if not handled properly as it carries live current.

Q: What color is the live wire in electrical wiring?

A: In many regions, the live wire is color-coded as brown.

Q: How is the live wire different in DC systems?

A: In DC systems, there is no live or phase wire; there is a positive and negative terminal.

Q: Are live wires always present in electrical installations?

A: Yes, live wires are necessary for supplying power in most electrical systems.

Q: Can live wires cause electric shocks?

A: Yes, mishandling live wires can lead to electric shocks and pose serious risks.