Recent content by walt

Thanks, I can see that this is an approximation but that is what I need at the moment. From the last equation it apears that if I know the capacitance in Farads and the voltage in volts I can directly calculate the charge (Q), right? One other thing, in the first equation epsilon subzero is the...

That's right but I need to know what that little number is.

Most sites say that there is an electric field associated with the posts of the battery. It is clear that the field 10 cm above a post is proportional to Q (charge on the post in Coulombs divided by square of the distance away from the post. What I can't arrive at is the relationship between the...

Occasionally I need to undrstand electric fields and I usually find an equation that allows me to solve my problem without understanding the solution. Dangerous but... Anyway I've encountered another field problem and now I'd like to understand the solution to the problem. Put in general...