A fuse is wired in series with a light. If the filament...?

Question

A fuse is wired in series with a light. If the filament of the bulb is a metal (e.g., tungsten), is the fuse more likely to blow-out immediately after the switch is closed or some later time after the bulb has been on for a while? Explain your answer. What if the filament were made from a semiconducting material (e.g., carbon)?

Answer 1

i think it is tungsten...coz the conductivity of tungsten is very high...so more amperes will flow through it ...
but carbon is a semo-conductor only..so less amperes would flow and the fuse is less likely to burn off...
it will be off IMMEDIATELY-with tungsten...coz current is the same-voltage is the same...so why wud the fuse wait? it melts straight on with the first instance of high resistance coz temperature grows with time because with tungsten i think maybe current increases in between
i think with carbon it will be opposite...i think it will be this but i am not so sure....

Answer 2

The fuse will blow if
- the fuse is fast blow type and
- current rating is just enough for the bulb
because bulb will draw more current at initial state to heat up the filament, the current will reduce as the bulb light up and resistance of the filament increase with temperature.
It would be the same for the carbon. I guess.
Carbon is not a semiconductor but a poor conductor.

Answer 3

the fuse will only blow when electricity is flowing through it so when the light is on will the fuse blow and if the filament in the light " blows " the fuse will not blow ( the light is off is so the fuse will not blow) no matter the filament in the globe.
if the light is not on the fuse will not blow. so if you switch the light of the fuse will still be working. as for semiconductors same principal if it allows the light to work the fuse will blow only when light is switched on not when it is switched off

the only way for the fuse to blow when the light is switched off is if the fuse is in the wind.... (that blows)..... hehehe