# Homework Help: Second Uniqueness Theorem - griffiths

1. May 31, 2010

### momo1111

1. The problem statement, all variables and given/known data
In Purcell 3.7 (Problem) and Griffith there is a question,look at fig.
(we have 4 conductors with charges +Q,-Q,+Q,-Q (b),what will happen
if we connect them with tiny wires in pairs )
Griffith say that c distribution of charge ,can't be a solution
why ?
"because there is 2 conductors ,with total charge 0 on each ,
one possible way to distribute zero charge over is to have no
accumulation of charge anywhere " by Second Uniqueness Theorem
d is the solution

2. Relevant equations
I know that d is a solution , but c could be a solution too ,
why we choose d to be the solution ??
Uniqueness Theorem say that if you found one is unique,
and we found two.

i could say c is a solution ,
"because there is 2 conductors ,with total charge 0 on each ,
one possible way to distribute zero charge over is to have
minus charge and pluses charge at the "ends" ....
by Second Uniqueness Theorem
c is the solution

3. The attempt at a solution
?
help

File size:
9.5 KB
Views:
162