Voltage drop in Capacitors and Lightbulbs

[kkroo]

The batteries in this cicuit create a total voltage difference of 6 volts across the circuit.
Assume A is 6 vols in each circuit,
Record the voltage of the lettered locations at the time when the circuit is first connected, and later when it is fully charged

Note: bulbs below are identical

       |------A (Bulb)--B---(Bulb)----C--| |--D--|
       |                                         |
      ---                                        |
       -                                         |
       |                                         |
       ------------------------------------------

       |------A--| |--B---(Bulb)--C---(Bulb)---D--| |--E--|
       |                                                  |
      ---                                                 |
       -                                                  |
       |                                                  |
       ----------------------------------------------------

Any ideas?

Thanks

 

[tiny-tim]

Welcome to PF!

Hi kkroo! Welcome to PF!

Show us what you've tried, and where you're stuck, and then we'll know how to help!

 

[kkroo]

Hello,

I know that the Kirchhoff’s loop rule says the sum of the potential changes in the circuit must be zero. I also know that when the capacitor is fully charged, there is no potential difference bwtween the bubls because they don't shine. Here is what I think so far, but I have no idea if its correct.

Charging:

       |------6 (Bulb)--3---(Bulb)----0--| |--0--|
       |                                         |
      ---                                        |
       -                                         |
       |                                         |
       ------------------------------------------

Charging:

       |------6--| |--6---(Bulb)--3---(Bulb)---0--| |--0--|
       |                                                  |
      ---                                                 |
       -                                                  |
       |                                                  |
       ----------------------------------------------------

Charged:

       |------6 (Bulb)--6---(Bulb)----6--| |--0--|
       |                                         |
      ---                                        |
       -                                         |
       |                                         |
       ------------------------------------------

Charging:
( aim especially stuck on this one, I know the opposite capacitor plates should have the same charge, but I know there can't be a potential difference between the bulbs.

       |------6--| |--0---(Bulb)--0---(Bulb)---6--| |--0--|
       |                                                  |
      ---                                                 |
       -                                                  |
       |                                                  |
       ----------------------------------------------------

Any ideas? Please help as soon as you can, this is due in an hour and a half.

Thanks