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in the following diagram the numbers above the capacitators indicate μF,

http://picasaweb.google.com/devanlevin/DropBox?authkey=Gv1sRgCL_4l4PpvP_YsQE&pli=1&gsessionid=ABXE5awGNEiCKaJR5eBwnA#5333028795415941746 [Broken]

i am asked to find

I)the capacitance between A and B

II)if we know that the charge on the 5μF capacitator is 120μC, what is the potential difference between A and C

I)

i add up all the capacitators in the following manner

i add the 3 from the top left hand corner as parallel capacitators

and get C=12μF

then add the 12μF to the top right hand capacitator is capacitators in a row,

and get 3μF

then do the same for the bottom and eventually add up the total from the top and total from the bottom as parallels,

finally getting

C=5μF

II)

if i am looking for the potential difference from A to C can i look only at the bottom left hand capacitator and say that the potential difference on that capacitator is the same as the potential diff from A-C?

therefore

C=Q/V

V=Q/C

V=120μC/5μF

V=24V

does this look correct?

http://picasaweb.google.com/devanlevin/DropBox?authkey=Gv1sRgCL_4l4PpvP_YsQE&pli=1&gsessionid=ABXE5awGNEiCKaJR5eBwnA#5333028795415941746 [Broken]

i am asked to find

I)the capacitance between A and B

II)if we know that the charge on the 5μF capacitator is 120μC, what is the potential difference between A and C

I)

i add up all the capacitators in the following manner

i add the 3 from the top left hand corner as parallel capacitators

and get C=12μF

then add the 12μF to the top right hand capacitator is capacitators in a row,

and get 3μF

then do the same for the bottom and eventually add up the total from the top and total from the bottom as parallels,

finally getting

C=5μF

II)

if i am looking for the potential difference from A to C can i look only at the bottom left hand capacitator and say that the potential difference on that capacitator is the same as the potential diff from A-C?

therefore

C=Q/V

V=Q/C

V=120μC/5μF

V=24V

does this look correct?

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