Table of Contents
How does AC current flow through a wire?
In AC, a changing magnetic field creates a changing electric field, and a changing electric field creates a changing magnetic field. When AC flows in a wire, a changing magnetic field is created in the wire. This induces its own current in the wire in the opposite direction to the original.
Why does AC current have live and neutral?
The Alternating Current do not have polarity, but Live wire is dangerous and neutral wire can safely be touched. The reason is that, the neutral is the point at which all electrically balance voltage which is 120 degree phase shift from each other is connected together.
Why do electrons change direction in AC?
In alternating current, the electrons don’t move in only one direction. Instead, they hop from atom to atom in one direction for a while, and then turn around and hop from atom to atom in the opposite direction. Every so often, the electrons change direction.
What is neutral in AC power?
Neutral is a circuit conductor that normally completes the circuit back to the source. In a polyphase (usually three-phase) AC system, the neutral conductor is intended to have similar voltages to each of the other circuit conductors, but may carry very little current if the phases are balanced.
Why AC current changes its direction?
As the wire spins and periodically enters a different magnetic polarity, the voltage and current alternate on the wire. This current can change direction periodically, and the voltage in an AC circuit also periodically reverses because the current changes direction.
What is the difference between live and neutral in AC?
LIVE WIRE The live wire is connected directly to the generators of the electricity supply company.It carries current at high voltages (about 220−230V). NEUTRAL WIRE The neutral wire returns the electricity to the generator after it has passed through the appliance. The neutral wire completes the circuit.