Electric potential between two point charges

AI Thread Summary
The discussion centers on determining how the electric potential between two point charges changes when their separation is reduced by a factor of 3/2. Participants express uncertainty about the relevant formulas, particularly the relationship between electric potential and distance, referencing Coulomb's Law. There is confusion regarding whether the electric field strength remains constant with changing distance. Suggestions are made to explore the potential derived from the electric field. The conversation highlights the need for clarity on the principles governing electric potential and distance in electrostatics.
drawar
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Homework Statement


Two point charges are separated by a distance r. If the separation is reduced by a factor of 3/2, by what factor does the electric potential between them change?
A. 3/2
B. 2/3
C. 9/4
D. 4/9
E. Sqrt(3/2)

Homework Equations





The Attempt at a Solution


Honestly I couldn't think of any formula involving separation of 2 point charges and the electric potential between them. Reading a little more on electric potential, I find that U=Ed but then I'm not sure whether the strength of the electric field remain constant when we change the distance between two point charges.
 
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hi drawar! :smile:
drawar said:
Honestly I couldn't think of any formula involving separation of 2 point charges and the electric potential between them.

coulomb's law? :wink:
 
tiny-tim said:
hi drawar! :smile:


coulomb's law? :wink:

Hi there!
I've just gone over it and still can't figure it out. Does the Coulomb's Law have anything to do with the electric potential?
 
indirectly …

can't you find the potential from the field? :smile:​
 

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