For homework
2006-11-10 01:52:43 · 6 answers · asked by GordonGekko 1 in Science & Mathematics ➔ Engineering
also why does a wire get hot when a current passes through it ?
really appreciate all answers thnx alot.
2006-11-10 02:02:54 · update #1
The fuse is in the live wire circuit so that the device has all power removed from it when it opens. If it wasn't the remainder of wiring in the device would be hot to ground. The fuse is the first stop for the live wire in most home electronics.
Live wire feeds can only enter the house wiring after they have been fused or sent through a circuit breaker.
The live wire always goes through the light switch on the wall before it goes to the light on the ceiling for the same reason " to protect the person changing the light bulb'. If the dead wire was the one opened when the switch was thrown to off, our population would be quite a bit lower.
The wire gets hot because it has voltage dropped across it and is consuming power (watts). The more power consumed the more heat is generated. You can probably hold a small light bulb in your hand without getting burnt. If you try to hold a lighted 100Watt bulb it is too hot because it is using 100Watts of power.
2006-11-10 03:50:08 · answer #1 · answered by Buffertest 3 · 1⤊ 0⤋
In electronics and electrical engineering a fuse, short for 'fusible link', is a type of overcurrent protection device. It has as its critical component a metal wire or strip that will melt when heated by a prescribed electric current, opening the circuit of which it is a part, and so protecting the circuit from an overcurrent condition.
they are connected to live wires since if there is increase in voltage then fuse gets burnt and prevents household electrical articles from burning.
2006-11-10 01:56:42 · answer #2 · answered by Mysterious 3 · 0⤊ 0⤋
Because if you connect a fuse to a dead wire, it has no effect. And wire heat up because of the resistance of the wire. This principle is what makes light bulbs work.
2006-11-10 02:06:56 · answer #3 · answered by Jeffrey S 6 · 0⤊ 0⤋
to prevent damage of appliances when overloaded or meaning it has high current passes through it and the purpose of fuse is to cut the connection.
wires get hot because it reaches the ampacity of the wire and overloaded
2006-11-10 02:43:33 · answer #4 · answered by jonathan h 1 · 0⤊ 0⤋
read yur books and do yur own homework ,loser
2006-11-10 07:07:28 · answer #5 · answered by pahump1@verizon.net 4 · 0⤊ 1⤋
its fun and cool
2006-11-10 02:00:26 · answer #6 · answered by Anonymous · 0⤊ 2⤋