Potential difference across capacitors

AI Thread Summary
The discussion revolves around calculating the potential difference across a three microfarad capacitor in a circuit where point A is 19 volts higher than point B. According to Kirchhoff's law, the net potential difference around a closed loop must equal zero, leading to a potential difference of -19 volts across the circuit. There is confusion regarding the sign conventions for the batteries and the voltage distribution among capacitors in series, as the total voltage is the sum of the individual voltages across each capacitor. Participants request clarification on the circuit diagram, which is not displaying properly for some users. Understanding the correct voltage distribution and sign conventions is crucial for solving the problem accurately.
Krushnaraj Pandya
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Homework Statement


The figure shows part of a complete circuit. The potential at point A is greater than that of B by 19 volts what is the potential difference in volts across the three microfarad capacitor?

Homework Equations


All relevant to electric circuits

The Attempt at a Solution


From Kirchhoff's law, net potential difference across a closed loop should be 0. V(a)-(b)=19 V. Therefore, the net potential difference across given figure should be -19 V. I'm having trouble with the sign conventions related to this, since I don't know what sign to put with the batteries, otherwise since all capacitors are in series- charge across them is the same. I'd appreciate some insight.
 
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Krushnaraj Pandya said:
The figure shows part of a complete circuit.
Which figure?:wink:
 
The voltage would not be equivalent across capacitors in series. The voltage across all of the capacitors is the sum of the voltage across each individual one.
 
Hi could you re-attach the circuit drawing ? It is not displaying on my iPhone
 

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