Question

why do signs at petrol stations warn people not to use cell phones while filling petrol in their cars?

Answer 1

because there is some kind of field(may be electric or magnetic) is generated due to cell phone and thus it ignites the gasoline(petrol) and creates bomb blasts.

Fore more information,please go through the following links :-
1) http://wiki.answers.com/Q/Why_cant_you_use_cell_phone_at_petrol_station
2) https://www.youtube.com/watch?v=5nNojIeTceI

Answer 2

hope you understand. @holitorro

Answer 3

yes somewhat..thanks!

Answer 4

welcome :)

Answer 5

@holitorro you can also give me medal by clicking BEST RESPONSE right side to my comment.

Here is the pic to illustrate you :-

Answer 6

possible static discharge

Answer 7

There has apparently been no research on this, and no recorded incidents related to the use of phones in petrol station.

This is a historic bit of folklore and has no proven physical basis.

(If oyu get blown up in a petrol station - don't blame me! :-)