# Reason behind

What is the reason behind the fact that, old bulb does not get fuse but a newer one is quite prone to?

Note by Kushal Patankar
3 years ago

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Ithink evey time the bulb lights up, the defects(non metalic) are destroyed, and the wire becomes more uniform, so if the bulb is saved from fusing one or more times, it s chancesof fysing become less

- 3 years ago

Bulb is not a living creature, it can not adjust according to the changes.

- 3 years ago

Newer one did not go old and the older one had survived that's why it is old.

- 3 years ago

Why is this not allowed? That is a reasonable answer.

Bulbs fusing earlier is most likely caused by defects in the bulb.

So if a bulb has defects, it'lll fuse more early. Bulbs which do survive are less likely to be defective and thus only fuse after a long time where the components wear out.

We are not considering manufacturing defects. The correct reason will be to say that newer one has lower resistance than an older one.

- 3 years ago

Do you have any facts to support this? Is this question in any of the books?

- 3 years ago

Personal experience

- 3 years ago