Discussion in 'General Electronics Chat' started by fankoushat, Mar 13, 2010.

1. ### fankoushat Thread Starter New Member

Mar 8, 2010
17
0
Hi Ghar,

I was asking about how can we get same voltage by different number of charges. You gave me an answer, but not clear.

Can you tell me what this equation mean:

E = K q/ r^2?? what K means, and what do you mean exactly?

Thanks alot

2. ### Wendy Moderator

Mar 24, 2008
20,993
2,731
Try posting a link, that way everyone can know what you're talking about.

If you want to contact someone specific, use PM (private mail). However, most members will not use PM for specific questions, but use them to point to posts or threads instead.

3. ### Ghar Active Member

Mar 8, 2010
655
73
That is Coulomb's Law, and K is a constant that depends on the material you're dealing with.

http://en.wikipedia.org/wiki/Coulomb's_law

Basically what I was saying is that voltage depends on electric field and electric field depends on charge. It's a series of interactions.

The relationship between charge and voltage is defined as capacitance.