Diameter of a soap bubble increases when it is charged

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  • #1
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"Diameter of a soap bubble increases when it is charged." why?
 

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  • #2
ZapperZ
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It is charged with the SAME type of charge, i.e. say you put a lot of electrons on it. Now think of what an electron would like to do to another electron (other than sucker punch it or flip its spin).

Zz.
 
  • #3
Hootenanny
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(other than sucker punch it or flip its spin).
:rofl:
 
  • #4
xts
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"Diameter of a soap bubble increases when it is charged." why?
Don't believe everything you are told. Take an experimantalist's approach. Make a soap bubble. Then charge it with electricity made with a piece of plastic rubbed by woolen cloth.

I guess this is one more most-stupid-example-found-in-school-textbook-on-physics making kids hating physics and showing them that physics is a set of formulae and rules predicting world behaviour contrary to their own experience.
 
  • #5
xts
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@ZapperZ - excercise for you:
A bubble 1cm in diameter, normal air pressure.
Charge it to 100,000V (or 1 million...)
Compute 'increase' of diameter.
 

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