why fuse wire is made very thin ?

Question

anonymous · Answer

Fuses save devices at the time of high currents. If they are thin, then only they will be melted quickly and looses connection with the devices. Which this your device will be safe from high currents. That is the fundamental usage of fuse.

anonymous · Answer

Fuse wire is calibrated to take a current limit. V=IR, so the resistance in the fuse wire allows a certain amount of current to flow. Resistance acts as a choke and as a result causes the wire to heat. Thats why electric fires, light bulbs  and kettles etc work. they get hot when a current flows. The wire heats to distruction at its rated current therefore breaks the circuit when that current is exceeded.This protects the device from high current surge on failure and also human life. Hope this helps

anonymous · Answer

Fuses save devices at the time of high currents. If they are thin, then only they will be melted quickly and looses connection with the devices. Which this your device will be safe from high currents. That is the fundamental usage of fuse.yesterday