plzzz let me knw tis !! GRADE 10 PHYSICS- importance of live wires neutral wires !!!!!!!!!!
These two wires provide the voltage difference (called potential difference) that is responsible for driving the current through an appliance. Live and neutral are terms most commonly use with mains electrical supply .. they are equivalent to + (live) and - used with batteries and other DC sources. The live wire is at the higher voltage (most dangerous) and the neutral is usually close to ground voltage (0 V). Both wires together form the complete circuit required for the current .. from the supply (through the live wire) to the appliance and back to the supply (through the neutral wire). In a mains circuit a switch is always connected into the live wire so that the high voltage is disconnected from the appliance. A switch connected in the neutral wire prevents the appliance from working (so it appears to be off) because there is a break in the circuit .. but the high voltage is still connected to the appliance which may be dangerous. For the greatest safety a switch should disconnect both live and neutral wires at the same time.
In a typical power generation system for a town, city, state or country, the circuit consists of a generator, wires from the generator ('active' or 'live' wires), switches, loads (heaters, lights, motors, etc.), neutral wires and an earth return. Everything on the generator side of the load is live. Everything after the load is 'neutral'. The importance is that with the switch off, the 'neutral'carries no current, while the ?ctiveor 'live wires carry current at all times.
