- #1
Acuben
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Homework Statement
http://yfrog.com/mrcapdg
http://img819.imageshack.us/img819/1172/capd.th.gif
Find equivalent capacitance
answer is 4C/3
Homework Equations
whatever is in parenthesis is subscript
formula1: series: 1/C(eq)= 1/C(1) + 1/C(2) + 1/C(3) + ...
formula2: parallel: C(eq)=C(1)+C(2)+...
formula3: V=Q/C
The Attempt at a Solution
because of symmetry I decided that 3C has 0 charge (0q) and that top part has same voltage as the bottom part
charge split top and bottom equally
so I solved the problem "as if" 3C doesn't exist
so on the top series I get C/3 (using formula 1) and C/3 for bottom as well since it's in symmetry
and top and bottom form parallel so I get
2C/3 using formula 2
which is only half the answer
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