# Light bulb

_Muddy_

## Homework Statement

We did an experiment in class abvout resistance and temperature. The teacher told us to find out why light bulbs usually blow when you turn on the light. It must be related to the experiment we did which was seeing how resistance changed with temperature

## Homework Equations

I'm not sure if there are any, If there are please tell me

## The Attempt at a Solution

I have no idea why, and i wouldn't know where to look on the internet

thanks

_Muddy_

Homework Helper
The light bulb fails because the current through the filament is too large.
The current depends on the resistance
How does the resistance of metal change with temperature ?

_Muddy_
The light bulb fails because the current through the filament is too large.
The current depends on the resistance
How does the resistance of metal change with temperature ?

The higher the temperature the higher the resistance.

So then, the light bulb fails because the current through the filament is too large. The resistance is too low. So the temperature is too high. Is that correct? What actually happens to the filament, does it break? Why would a high temperature/ high current make the light bulb fail?