Capacitors: Series Capacitance Concepts

In summary, the sketch represents two capacitors with parallel plates in air, equal in area but with different plate separations. The energy stored in capacitor XZ is less than the energy stored in capacitor YW. The electric field between plates Y and W is equal to the electric field between plates X and Z. The potential difference across capacitor XZ is equal to the potential difference across capacitor YW. If the plate separation for capacitor YW decreases, the energy stored in capacitor XZ will stay the same. QW + QX is greater than zero. If capacitor XZ is eliminated from the circuit, the energy stored in capacitor YW will stay the same. If capacitor Y
  • #1

Homework Statement


The sketch below is a side view of two capacitors consisting of parallel plates in air. The capacitor plates are equal in area but the plate separation differs as shown. Individual capacitors are specified with two letters, for example YW is a single capacitor. The charge on plate Y is represented by QY.
The image is http://img168.imageshack.us/img168/7236/plotty8.png" [Broken].


Homework Equations


C = (1/2)*E0A/d
C = 1/2(CV^2)
E = (.5)(Q^2/C)


The Attempt at a Solution


stay the same The energy stored in capacitor XZ is ______ the energy stored in capacitor YW.

less than The electric field between plates Y and W is ______ the electric field between plates X and Z.

equal to The potential difference across capacitor XZ is ______ the potential difference across capacitor YW.

stay the same If the plate separation for capacitor YW decreases, the energy stored in capacitor XZ will ...

greater than QW + QX is _____ zero.

stay the same If capacitor XZ is eliminated from the circuit, the energy stored in capacitor YW will...

stay the same If capacitor YW is eliminated from the circuit, the magnitude of QX will...

What am I doing wrong?
 
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  • #3
anyone??
 
  • #4
why do you think all those answers are true? It's hard to tell what you're doing wrong with just the answers.
 
  • #5
ok then. first of all, are the charges on all capacitors exactly the same regardless of distance and/or area on a series circuit?

And if one of the capacitors is removed, will the charge of the other one stay the same?
 
Last edited:
  • #6
really, i need to know
 

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